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1
(Note:‌‌ All of these bug reports were condensed into the file debug.txt. The notes near the arrows appear to be feedback. Notable bugs include the Hyper Beam Bug, the Toxic Bug, the Man-on-Cinnabar-Gym Bug, and reports on the Missingno. bug. Note the Hyper Beam and Toxic bugs were not fixed in Yellow.)
2
3
[Keileon here! Notes in square brackets are commentary from me. Everything else is exactly the way I got it.]
4
5
6
BUG1-13.txt
7
8
13:31 99/01/13
9
10
Pokémon‌‌‌ Yellow
11
Bug Report
12
13
14
1
15
It's possible to erase all of your data if you pull out the cartridge while the SGB is on or is powering up.
16
→This is improper operation.
17
18
2
19
On Route 22, there are statues on both sides of the entrance of the Pokémon League building. Even though you should be able to move above them and there is not anything above the statues, you run into the wall as if there was an obstacle.
20
→It’s not possible to fix the map data.
21
[This is likely because this was beta testing specifically of localization; the localizers had access to some parts of the code, but not others.]
22
23
3
24
After the intro screen changes twice, the music's beat stops. Right after Pikachu runs on the screen and right after Pikachu flies into the air, the beat stops.
25
→Cannot be changed.
26
[See above, same for 4.]
27
28
4
29
When a player is stopping a Pokémon from evolving, the music stops playing after you return to the normal gameplay screen. You can only hear a sharp beeping sound.
30
31
→Cannot be changed.
32
33
34
Bug1-19.txt 1/?
35
13:31  99/01/13
36
Pokémon Yellow
37
Bug Report
38
39
(1-3 are same as above)
40
41
4 Cover Sheet:
42
These bugs do not include text bugs.
43
Text bugs should be sent directly to Ogasawara-san.
44
[This refers to Nob Ogasawara, the English translator for the localizations of gens 1 through 4.]
45
46
Bug
47
#5: If all of your Pokémon faint while you're on the Cycling Road, you reappear at the last Pokémon Center you visited. If you try to get on your bike at that time, the message "You can't get off here!" appears. This also happens when you aren't riding your bike.
48
→Fixed.
49
50
51
#6: The Player's Pokémon has no PP, the opponent cannot use any moves, the player's [other?] Pokémon are all fainted, and the player has no items they can use. If the player has no means of fighting left, the player's turn cannot end.
52
53
(Suppliment)
54
55
When only one of your party Pokémon is able to fight, and three of your four moves have zero PP (including moves that have had PP‌‌ Up used on them), and Disable is the only move left, this can definitely be reproduced.
56
→Reproduced.‌ Fixed.
57
58
#7:‌ In the middle of battle, the player’s Pokémon becomes small. When you pick a move without PP, the Pokémon’s sprite is covered by a text box that appears in the lower left corner. If you press the A‌‌ Button, a small bit of the Pokémon’s sprite appears through the text box. (This also happens when you press the B Button).
59
60
→Checked.
61
62
63
#8: You cannot use the Poké Flute on sleeping Pokémon outside of battle. If you use it outside of battle, a message stating "Sleeping Pokémon don't like this!" will appear.
64
65
→NOA can handle. →Change confirmed.
66
[NOA = Nintendo of America]
67
68
#9: After grappling moves (like WRAP and BIND, etc) hit, the defending player gets a "It can't move!" message. The message for the first attack reads "Enemy ____'s attack continues..." This message continues to repeat with each attack (2-5 times). However, However, after Fire Spin hits, the game will not always notify the player that defending Pokémon is always unable to move. The message is contradicting what happens. The attack itself continues as normal.
69
70
71
→Intended.
72
73
It’s not a specific move, but when a grappling move has been decided on, the message will come up, and only when the grappled Pokémon is moving first will the ‌‌‌‌It cannot move message appear.
74
75
76
#10: When the player talks to Pikachu, instead of the music continuing to play as normal, the music stops until Pikachu's portrait appears. This bug can be reproduced in all areas, but it does not happen in inside buildings such as Lavender Town's Pokémon center.
77
78
→Cannot be fixed.
79
[See 2. This seems to suggest that music data cannot be changed by the localization team.]
80
81
82
#11: When you use TM#48 ROCK SLIDE, three boulders rise from the bottom of the screen. Before the third boulder appears completely on screen, all three boulders disappear for an instant. This happens again at the top of the screen.
83-
#13: Route 17 (Cycling Road): When the message "Maybe some Pokémon need a stone in order to evolve." appears, you try to push the A button to look [for an item?], and you run into a wall.
83+
84
→Intended.
85
86
#12: This bug happens in Victory Road and the path leading to the Elite Four. Even if you're riding your bike, the music doesn't change. The music that was playing before getting on your bike restarts.
87
88
→Intended.
89
90
#13: Route 17 (Cycling Road): When the message "Maybe some Pokémon need a stone in order to evolve." appears, you try to push the A button to look (for an item?), and you run into a wall.
91
The sound that plays when you find an item plays, but you don't get the item. The background music becomes distorted, makes strange sounds, and becomes extremely slow. This continues until the player leaves the area.
92
93
→Cannot be reproduced.
94
[This seems to be the FIRST recorded case of one of several glitches, most likely a variant of the 0 ERROR glitch. If the person did this intentionally, they would have been able to provide more data; that there wasn't enough for the team to reproduce means that it was found by accident.]
95
96
#14: When the player chooses the player data screen and presses B soon after, the screen corrupts for a short second. This only happens with SGB and GBC.
97
98
→Intended.
99
100
Bug 1-21.txt
101
#15: Fuchia[sic] City
102
If you walk from the left to the right in front of the old man's house, the music stops. Two of the player's Pokémon (Clefairy and Pidgeot) were poisoned.
103
→
104
[Another early recorded case of a glitch, this time of the TMTRAINER effect. Difficult to tell how it was triggered, since there's no mention of a "blank" move, ie Super Glitch, which is the easiest way to produce this effect. Also amusing that the devs had no idea how to react.]
105
106
107
#16: Final Four
108
After winning a battle with two Pokémon (one frozen and the other having used its last move Doble[sic] Edge against Agatha, the player uses a Max Revive. During the next battle, they are left with only two Poké Balls, and they black out. If a Pokémon is frozen and Poké Balls are left, they should black out.
109
(Supplement)
110
111
While fighting Agatha, if your Pokémon is poisoned or paralyzed, if you get recoil from DOUBLE-EDGE, you can definitely reproduce it. With the combination of the status +‌ recoil +‌ the battle ending, you can reproduce it anywhere.
112
113
→Reproduced.
114
115
116
#17: Any
117
If you're walking for a long time from left to right (with Pikachu following), Pikachu's sprite begins to make random jolty movements.
118
119
→Reproduced.
120
121
#18: Ending
122
After defeating the rival at the end of the game, the screen showing how much money you've won doesn't appear. Soon after that, the rival's text appears.
123
124
→Intended.
125
126
127
#19: Final Four
128
When you're fighting Lance's Gyarados, the Gyarados uses TM Hyperbeam[sic]. After using the move, although the person who used the move shouldn't have a turn, the player's Pokémon faints as a consequence. When sending out the next Pokémon, Gyarados should lose its turn, but is able to attack again.
129
130
→Intended.
131
[THIS WAS INTENDED?]
132
133
#20: Ending
134
After evaluating your Pokédex, Professor Oak gives you the following message: "You're great! You should get the Flash HM from my assistant!" As the player already had the Flash HM, this message makes no sense.
135
136
→Intended. Feature.
137
[This likely has to do with event flags; it's easier to just assume and let a small discrepancy slip by than make an entire conditional checking for the item in your bag or PC.]
138
139
#21: Any
140
When using the SGB, the X button doesn't function. While the game turns on, I mashed the X button. After the licensing screen, I kept pressing the X Button, and pressed the Reset Button. Doing that, the X Button stopped working, and to get it working again, I had to turn the power off again.
141
142
→Reproduction confirmed.
143
144
145
#22: Front End
146
When accessing the SGB's Color Palate and Controller Setup options while the Demo Mode plays, the screen corrupts.
147
148
→Reproduction confirmed.
149
150
This might be a SGB bug, so we can’t fix it.
151
[SGB = Super Game Boy. If it's a bug on a system, a team for a specific game cannot fix it.]
152
153
#23: Victory Road
154
In the cave, the switches will activate when pressed without having a rock pushed on top of them. If your Pikachu is in the party and is to the right of the switch, and you quickly return to it, the switch will activate.
155
156
→Reproduction confirmed. →Fixed.
157
158
Bug1-25.txt
159
160
#24: Front End
161
Pick the Graffiti option for the border and going to the next option. With the Log Cabin border selected, wait for the star to appear. Select the Graffiti option one more time. When you do, every time the screen changes, it will corrupt on the upper right.
162
163
(Supplement)
164
165
SGB‌‌ Bug  Frame Change  The Border changes the frame
166
167
Log Cabin ->‌Change the Border ->‌Star Appears
168
169
→This might be a SGB bug, so we can’t fix it.
170
171
#25:‌ Pokedex
172
Select the Pokédex and select Pokémon. Move your cursor to Quit on the option menu and press the B Button. The cursor will stay on the original option of Quit, but will appear on the left side.
173
174
→Fixed.
175
176
177
#26: Pokedex
178
Select the Pokédex, and select Pokémon. On the selection screen, move your cursor to quit and press the B button. Even though the cursor remains in its original position next to Quit, the cursor appears on the left side of the screen.
179
180
#26: Pokedex
181
The following Pokémon's cries are corrupted.
182
#01 Bulbasaur
183
#25 Pikachu
184
#97 Hypno
185
#129 Magikarp
186
If you choose the Cry option, it happens one out of five times more or less.
187
188
189
→
190
[Likely has to do with the sound engine.]
191
192
193
#27: Any
194
When entering and exiting a guard post, quickly press the X Button. When you do this, a corruption frame will appear at the top of the screen. It's thought that this only happens when the screen transitions both when going east or west from the first floor of the guard tower.
195
196
(Supplement)
197
198
What is a guard post?‌‌ The place where a guard is.
199
200
→This might be a SGB bug, so we can’t fix it.
201
202
#27: Any
203
204
When entering and exiting a guard post, quickly press the X Button. When you do this, a corruption frame will appear at the top of the screen. It's thought that this only happens when the screen transitions both when going east or west from the first floor of the guard tower.
205
206
#28: Any
207
When using a Rare Candy to revive a Pokémon, its HP is restored too. However, until the player looks at the status screen, its status remained FNT.
208
209
→
210
211
#29: During Battle
212
When you select an option in battle, the music stops. This only happens in the middle of the second battle sequence.
213
→
214
[Even I'm not sure what that last part means. Might be attached to a glitch.]
215
216
217
#30: During Battle
218
In battle, when selecting the PKMN option from the Battle Options box and returning from the subscreen, the battle options box flickers.
219
→
220
221
222
#31: Cinnabar Island
223
If you Surf from the right of the Cinnabar Gym, an NPC appears on the roof of the Gym. When you clear the "The door is locked..." text, the NPC disappears.
224
225
→Fixed.
226
(Supplement)‌ A similar bug to the above where an NPC‌ can appear above the window was also fixed.
227
228
#32: Front End
229
When you softly press the Reset Button on the title screen, a small beep sound can be heard when the game resets.
230
231
→
232
233
#33: During Battle
234
When the player's Pokémon faints, change to another Pokémon. While the second Pokémon is in battle, even though the character revived the fainted Pokémon, it was not returned to battle. When the second Pokémon has finished the battle, the experience points are divided up for the first Pokémon (even though the first Pokémon fainted in battle).
235
236
→Intended.
237
238
#34: Any
239
When you talk to Pikachu a few times, the Water Texture begins to corrupt. Before long, after continuing to talk to Pikachu a few more times, the Water Texture goes totally black.
240
241
→Something similar was reproduced. →We will try to fix it for grassy areas.
242
243
#35: Safari Zone
244
The entrance between Area 2 and 1 is 4 spaces wide, but you can only use the middle two spaces. You collide with the outer two spaces. 
245
246
→It is impossible to fix map data.
247
248
#36: Colossseum 2
249
250
Even if you satisfy all the conditions, you can't access the Petit Cup.
251
252
→Fixed.
253
254
#37: Any
255
When poisoned by Toxic, the damage increases every turn. However, If the Pokémon is returned and sent back out, the poison becomes normal poison (the damage doesn't increase every turn).
256
257
→
258
[Probably intended, if there's no reply.]
259
260
#38: Cable Club
261
When Player 1 selects any of the Trade Center, Colosseum, Colosseum 2 options and continues to press A, Player 2 automatically appears in the Computer Room. Player 2 can freely walk around. When Player 2 releases the A Button, Player 1 will appear in the Computer Room. Until Player 1 releases the A Button, Player 2 should not appear in the Computer Room.
262
263
→
264
265
#39: Saffron City
266
On the fifth floor of Silph Co. a Juggler has no outline above his head. When entering a battle and the screen goes black, the outline of his hat appears over the blackout.
267
268
→
269
270
#40: Miscelleneous[sic]
271
When in the Pokémon Center, if you access Print Options [while connected to] another player (either from the PC or Pokédex), the error number that appears quickly changes between number 1, 2 or 4. This only occurs when two games are connected by the link cable and two players both are in the Trade Center or Colosseum.
272
273
→This was fixed once, but generally speaking when you are not connected to the Pocket Printer, don’t choose the Print Command.
274
[LOL]
275
276
#41: Cable Club (Place:‌‌ Cable Club
277
278
Lock Up Bug
279
280
Frequency 75‌~100%
281
282
Version:‌ 0120
283
284
Not fixed)
285
286
While Player 2 is looking at the Pokédex and Player 1 selects any of the Trade Center, Colosseum, or Colosseum 2 from the PC, Player 1's screen will turn into the "Please Wait" screen. When Player 2 stops viewing the Pokédex or accessing the PC, both players will freeze on the Please Wait screen.
287
288
→Cannot be fixed.
289
290
Generally speaking when you are not connected to the Pocket Printer, don’t choose the Print Command.
291
292
#42: Colosseum 2
293
In the Cable Club menu options, both Players 1 and 2 can glitch out at the same time. For example, with Player 2 not touching anything, Player 1's cursor will be on the same option. When Player 1 presses the A button, Player 2's cursor will move randomly on Player 2's menu. When that happens, one will move on one screen but not on the other. This causes the game to lock up.
294
295
→Checking.
296
297
#43: Front End
298
On the intro/demo screen, the audio seems imbalanced between the left and right. When you're using headphones, the right side is much louder than the left. However, when you move to the "Continue/New Game" screen, left and right are the same volume. It happens on all systems but is especially notable on the original Game Boy.
299
→
300
301
302
#44: Cable Club
303
After selecting either Trade or Cable Club, the next screen is the one where both players are sitting facing each other. However, for a moment when the screen appears, there is a corruption. When the screen changes to a different place, two Gastly sprites appear.
304
305
→
306
[Probably attached to a desync glitch.]
307
308
309
310
#45: Cable Club
311
Colosseum 2: The cursor does not react quickly on the 3 "Cup" options. If you don't press the same direction quickly on the control pad, the cursor doesn't move from the one option.
312
313
→
314
315
Bug2-01.txt
316
#46: Route #
317
On Route 15 (in the building with Oak's Aid and the telescope), when you enter from the right side of the building, go up the stairs and walk just past the bench. Turn to the left and walk to the far telescope. Look at Articuno through the Telescope. After looking, go straight down. At the bottom of the screen, some extra graphics appear. These graphics persist when the player goes from the top of the room until they go down the stairs.
318
319
→Reproduced.
320
321
#47: Pokemon Center
322
When the Jigglypuff in the Pokémon Center in Viridian City stops singing, a small beep can be heard twice.
323
324
→
325
326
#48: Pokemon Center
327
After healing your Pokémon at the Pokémon Center, a strange beep plays.
328
329
→
330
331
#49: Menu Screen
332
Often on the save screen, when you press the D-Pad and the A Button at the same time, it will play the sound effect for selecting something, but you can't select anything.
333
→
334
335
336
#50: During Battle
337
Super Fang and Hyper Fang are Normal attacks. But, when using these attacks, they don't have the same effects. Hyper Fang's effect message is "It does not effect ___.", but Super Fang does damage.
338
339
→Intended.
340
[Super Fang is "set" damage and unaffected by type matchups, so this makes sense.]
341
342
#51: Colosseum
343
When two players are fighting in the Colosseum and one Pokémon is asleep, sometimes on one player's screen before it wakes up, it will wake up on the other player's screen. When this occurs, it can corrupt either player's game.
344
345
→
346
[Desync bug, well-documented.]
347
348
#52: Closseum[sic]
349
Player 1 is using a Venomoth against Player 2's Gloom. Venomoth's ACID attack is not every effective against Gloom. However, the message "SLEEPPOWDER was disabled" appears. After a few turns, the two games were offset by a full turn. When it said that Player 1 had won on Player 1's screen, the battle on Player 2's screen had not ended. If Player 1 reenters the battle, it locks up.
350
351
→Checking.
352
[See above. Since I don't know of desyncs happening only with sleep, this was likely fixed.]
353
354
#53: Colosseum
355
Player 1's Moltres uses Fire Spin.
356
When the attack is successful, Player 2's new Pokémon can move every turn. Moltres's attack continues for six consecutive turns.
357
358
→
359
360
#54: Indigo Plateau
361
The player walks up to Lance (the fourth trainer) and Lance stops the player and talks to him. However, Lance doesn't face the player.
362
363
→This is a Pokémon‌ framework problem.‌ It can’t be fixed.
364
365
#55: Vermilion City
366
With two Pokémon in your party poisoned, walk towards the entrance to Vermilion City. When the player enters the screen that has the NPC that gives the player a Squirtle, one of the Pokémon faints and a text box appears. Above the text box, the NPC's sprite is to the left of the textbox, and overlaps with the right side of a building.
367
368
→Reproduction cannot be confirmed, but a related bug was fixed, so is this fixed too?
369
370
#56: Pokemon Mart
371
At the Poké Mart, talk to the NPC that buys and sells items. On the "Sell" and "Buy" screen, pick NO. After picking it, above the text box, Ash will flash and move to the side, and the graphics will corrupt. This happens at all Poké Marts when you pick NO.
372
373
→
374
[You can tell this was English localization because Red was called Ash lol]
375
376
377
#57
378
When the options change and you enter the Link Cable Club mode, the changed options revert to the default settings.
379
380
→
381
382
#58
383
When Pokémon evolve and learn a move that the original form can't learn, the music stops. Unless you return to the gameplay screen, the music will not play.
384
(Note: Even though the BMG is not playing, the sound effects still play.)
385
(High Frequency)
386
→Intended.
387
388
#59 (Place: Cable Club
389
Rule, Score Problem
390
Frequency 75~100%
391
Version: 0203b
392
Unfixed)
393
394
Occurs when two people are trading Pokémon. Player 1 is trading for Player 2's Pokémon. When the trade animation ends, the "Please Wait" message appears on both player's screens. After Player 1 turns off the system, the contents of both Player's games is confirmed. Player 1's Pokémon is the same, but Player 2 has Player 1's Pokémon. Player 2's Pokémon has disappeared during the trade. It can be reproduced with either Pokémon. This can also be reproduced if Player 1 pulls out the link cable on the "Please Wait" screen.
395
396
→Please consider if turning the power off during the "Please Wait" screen and pulling out the cable during the "Saving..." screen is the same. That is to say, the [fidelity of?] the traded data cannot be guaranteed.
397
[Great example of a dev telling a tester "then don't do stupid shit"]
398
399
#60: (Place: Wherever
400
Rule, Score Problem
401
Frequency 75~100%
402
Version: 0203b
403
Unfixed)
404
405
After the player uses an HP Up on a very low level Pokémon, when the stat increases, a message appears, but it barely rises. It's easy to get this to happen when using a Status Upgrade item.
406
→Intended. This is due to [the stat change] being rounded down during rounding calculations.
407
408
#61 (Cable Club
409
Frequency 75~100%
410
Version: 0203b
411
Unfixed)
412
413
Two players are playing with the link cable. Player one selects a Pokémon to trade and the screen says "Please Wait...". Player 2 picks the last Pokémon from their list, and right after the first dialogue box appears, resets the game. Player one's screen is stuck on "Please Wait...". Player 2 restarts the game, and accesses the print option. (The effect is the same on the PC or the Pokédex.) When that happens, the Print Error message appears on Player 2's screen. Player 1's trade continues without Player 2 and they receive a Pokémon with broken graphics. Player 1's Pokemon graphics and game progress (as well as anything else that did not participate in the trade) begin to break.
414
415
→Generally speaking when you are not connected to the Pocket Printer, don’t choose the Print Command.
416
417
#62 (Cable Club
418
Graphic, Texture Problem
419
Frequency 75~100%
420
Version: 0203b
421
Unfixed)
422
423
Note: This bug appears in Colosseum and Colosseum 2.
424
Battle mode. After selecting a move, Player 1 resets the system and leaves Player 2 in the battle. Player 1 once again reenters the game and accesses the printer options (The effect is the same on the PC and Pokédex). After that, the Print Error message appears for Player 1. Player 1 will continue the battle, but Player 2 will not be in the battle and the computer will automatically pick Player 2's moves. The battle screen's graphics will break. At the end of the battle, the problem won't happen.
425
426
→Generally speaking when you are not connected to the Pocket Printer, don’t choose the Print Command.
427
428
[L] #64 (In Battle
429
Frequency 50~75%
430
Version: 0203b
431
Unfixed)
432
In battle, when the player selects the battle option and presses the Select Button, the menu will flicker.
433
→
434
435
#64 (Colosseum
436
Rule, Score Problem
437
Frequency 1~25%
438
Version: 0203b
439
Unfixed)
440
441
When trying to enter the Petite Cup with the conditions satisfied, a text box saying you cannot participate will appear. On trying a second time, you can participate without issue.
442
→
443
444
445
446-
→ [There's no feedback!]
446+
447
#65 (Pokémon Tower
448
Frequency 75~100%
449
Version: 0203b
450
Unfixed)
451
On the sixth floor of the Pokémon Tower, if you're not holding the Silph Scope you can't proceed and you encounter the unknown Ghost. However, during the battle, if you use the Poké Doll, you escape the battle and the message "The ghost was the spirit of Cubone's mother. The mother's spirit has been laid to rest, and begins its journey to the afterlife" appears. This method circumvents all of the casino gameplay, and you can obtain the Poké Flute without getting the Silph Scope. This also happened in Pokémon Red and Blue Version.
452
[This was likely not fixed because the localization team could not change that data.]
453
454
#66 (Place: Wherever
455
Lock Up Bug
456
Frequency 75~100%
457
Version: 0203b
458
Unfixed)
459
I entered Agatha's Elite Four fight. I had a Pidgey with no PP except for Mirror Move, and Agatha's first Pokémon, Gengar, used Substitute. Pidgey used Mirror Move and also used Substitute. After that, Pidgey used all its PP, and could only use Struggle. Because of Gengar's Substitute, Pidgey couldn't damage Gengar. Because Pidgey's status was Normal, Gengar's moves couldn't hurt it. Because Gengar can't use Struggle and is a Ghost Pokémon that cannot be damaged by Struggle, I could do no damage whatsoever. Because Pidgey can't damage Gengar and Gengar can't use Struggle, no one can sustain damage. Because Agatha's other Pokémon are also Ghosts, and the player only can use Substitute, and can't use Ghost moves, Pidgey and Agatha's Pokémon cannot do damage. As a result, neither the player or Agatha can deal damage, and it becomes an endless loop. This happens with any Ghost-type Pokémon.
460
→Intended bug.
461
[how is it a bug if it's intended.]
462
[That said, this is probably a similar issue as above.]
463
464
465
#67 (Place: Cinnabar Island
466
Type: Other
467
Frequency 75~100%
468
Version: 0203b
469
Unknown)
470
There's a place on Cinnabar Island where the water meats the land. When your character surfs along it, Random Pokémon will appear. Generally, the Pokémon don't exist on Cinnabar Island.There are land Pokémon that can be encountered on the last ground [tile you were on]. For example, you can capture and fight Pokémon that you can only find in the Safari Zone. (Sometimes, there is also a bug where a glitched Pokémon with the number 000 appears that breaks the graphics and makes bugs.)
471
→ (There's no feedback!)
472
[This is related to the Old Man Glitch. Was fixed in Yellow.]
473
474
[L] #68 (Place: Start
475
Graphics, Texture Related
476
Frequency: 50~75%
477
Version: 0209
478
Unknown)
479
During the demo mode scene where Pikachu is flying in the sky, if you press A immediately after the animation ends, the graphics at the bottom of the screen will glitch for a moment.
480
→
481
482
#69 (Colosseum
483
Rule, Score Related
484
Frequency: 75~100%
485
Version: 0209
486
Unfixed)
487
488
TM39, Swift, does not work in Yellow Version the same way as it does in Red and Blue Version. In Red and Blue Version, Swift has an accuracy of 100%, but in Yellow if the opponent is Flying or Digging, when you use the move, it won't hit. If you use Swift while in a Link Battle with Red or Blue, Red and Blue will say it will hit, but the Yellow Game Pack will say it missed. Therefore, the damage on the enemy Pokémon will be shown on on Red or Blue, but not on Yellow. This causes graphical glitches on the Pokémon and have effects on the Hall of Fame.
489
→Fixed. It is the same as the behavior in Red/Blue versions.
490
491
[H] #70(Place: Elite Four
492
Soft Lock Bug
493
Frequency: 75~100%
494
Version: 0209
495
Unfixed)
496
While fighting the Elite Four's Lorelai, I was using Beedrill while Lorelai was using Dewgong. Beedrill used Rage while Dewgong repeatedly used Rest. The effect was that Dewgong would recover any damage done by the player, and Dewgong would not attack Beedrill. Because the player cannot change Pokémon, run, or use items, it becomes a soft lock.
497
→
498
[It's well-documented that in Gen 1, strong trainers will always pick Super Effective moves if possible, even if they don't do damage. Can also be reproduced with Primeape, or any other Pokemon with Rage that is weak to Psychic. This is why, in Yellow, Lorelei's AI was changed specifically when she's using Dewgong.]
499
500
#71 (Beginning Scene
501
NOA Guideline-Related Problem
502
Frequency 75~100%
503
Version: 0210
504
Unfixed)
505
Some ugly things come up on the copyright screen. The C in Creatures has a few red pixels, and the other characters on the copyright screen look similar.
506
Note: This was confirmed on a Game Boy Color.
507
→Intended.
508
509
#72 (Cable Club
510
Hard Lockup
511
Frequency: 50~75%
512
Version: 0210
513
Unfixed)
514
When the player linked with another, I talked to the Cable Club clerk. On the Save Screen, the first player picks No, and the second picks Yes. The second player can continue to pick an option in the option menu, but both games lock up.
515
516
#74 (Gym
517
Rule and Score
518
Frequency 75~100%
519
Version: 0210
520
Unfixed)
521
522
In the Cinnabar Island Gym, while answering the first question, I pressed the B button to choose NO. However, the next time, I pressed the B Button as before, and it picked the same answer as before. However, the player picked Yes, and the next time on the same quiz, pressing the B button chose Yes.
523
→Cannot be reproduced.
524
[This was probably a hardware issue.]
525
526
#75 (Wherever
527
Rules and Score
528
Frequency 75~100%
529
Version: 0210
530
Unfixed)
531
While a Pokémon is poisoned, you use Flash, and immediately after you take four steps, the Pokémon will stop taking damage from the poison. The Flash effect will also disappear.
532
→Cannot be replicated.
533
[I'm not sure what this is, but it not being reproduced means it wasn't fixed. The fact that it happened after four steps-- which is the overworld Poison interval exactly-- means that this is definitely something, and not a fluke.]
534
535
[ML] #76 (Route 4
536
Audio
537
Frequency 75~100%
538
Version: 0210
539
Unfixed)
540
Route 4. Even if there is a specific BMG playing, if you play the cry of #100 Voltorb in the Pokedex, the sound continues on a loop.
541
→
542
543
Bug 77 (Colosseum
544
Rules and Score Related Bug
545
Frequency 75~100%
546
Version: 0215
547
Unfixed)
548
Player 1 uses Metronome, and Player 2 uses Mirror Move after that. Metronome calls Sky Attack, and when Player 2 uses Mirror Move, instead of Sky Attack, it uses a random move.
549
550
Note: Metronome's move was a two turn attack, so if Player 2 uses Mirror Move, the bug will definitely happen.
551
→Intended.
552
[Likely reasoning: the opponent USED Metronome, even though it BECAME Sky Attack. Mirror Move copies what is used, not what the end result is.]
553
554
Bug 78 (Colosseum
555
Rule and Score Related Bug
556
Frequency 75~100%
557
Version: 0215
558
Unfixed)
559
In a duel in the Colosseum, when Player 1 uses a recovery move and Player 2 uses Counter, Counter does not function properly. Normally, Counter does double the damage of a physical move that hits it. Instead, the move does the damage of the last move that hit it. Because Player 1's Pokémon was hit by Counter, they immediately send out a new Pokémon. Then Player 2 uses Counter again on the new Pokémon. Because Player 1's Pokémon doesn't attack, instead of taking the damage from the new Pokémon, takes it from the last attack. Player 1's new Pokémon is sent in and the process repeats.
560
[Counter desync, well-documented.]
561
562
563
>>43458214
564
Bug 79 (Place: Field (A place where there are stairs)
565
Type: Other
566
Frequency: 75~100%
567
Version: 0215
568-
In battle, I was facing Pokémon with Self-Destruct (TM36) or Explosion (TM47) and I used Substitute. When the enemy Pokémon uses Explosion or Self Destruct to break the Substitute, the enemy Pokémon's graphics disappear, but it hasn't really been defeated. The Substitute is destroyed, but the process of exploding and fainting is prevented. You can continue the battle, but the enemy needs to be defeated again and its graphics don't come back. This happens both in the Colosseum and vs NPCs and in RGB Mode.
568+
569
570
I lefy Pikachu atop a high cliff, Pikachu  jumped down. I waited for the walking animation to begin. When the player began to walk, Pikachu didn't start to do the animation. When the player stopped and started to walk again, Pikachu started to follow after the player again and the animation started.
571
572
Bug 80 (In Battle
573
Type: Rule and Score
574
Frequency: 75~100%
575
Version: 0215
576
Unfixed)
577
578
Player 1 sent out a Pokémon in their party that used Substitute. After, Player 2 used High Jump Kick. Text appeared that read that Player 1's Pokémon "Kept going and crashed!". After "The Substitute took damage for Player 2!" came up. The Substitute was Player 1's, so it should not take damage for Player 2.
579
580
Bug 81 (Start of the Game
581
Type: Graphics and Textures
582
Frequency: 75~100%
583
Version: 0215
584
Unfixed)
585
At the start of the game, there is a scene where  stars fly over characters reading "GAME GREAK". When those stars fly through GAME FREAK, the AK in Freak disappear, as does part of the E in GAME, and the stars become transparent.
586
587
Bug 82 (Start of the Game
588
Type: Graphics and Textures
589
Frequency: 50~75%
590
Version: 0215
591
Unfixed)
592
When pressing Start, A, B or Y on the scene where Pikachu does a flying kick, a thick black line appears for a moment. This only happens on the Super Game Boy.
593
594
[H] Bug 83 (Move
595
Type: Other
596
Frequency: 75~100%
597
Version: 0217
598
Unfixed)
599
In battle, I was facing Pokémon with Self-Destruct (TM36) or Explosion (TM47) and I used Substitute. When the enemy Pokémon uses Explosion or Self Destruct to break the Substitute, the enemy Pokémon's graphics disappear, but it hasn't really been defeated. The Substitute is destroyed, but the process of exploding and fainting is prevented. You can continue the battle, but the enemy needs to be defeated again and its graphics don't come back. This happens both in the Colosseum and vs NPCs and in RGB Mode.
600
[I think this is documented, too.]