Okay, so we did some testing and apparently you actually CAN complete this level 100%. Basically the paths are supposed to change when a Bunny completes a full circuit in the top room and again when they complete a full circuit in the bottom room.
They change correctly for the Hub room, but bunnies sent to top/bottom will NEVER get out
so to beat the level you only let 1 Bunny go ahead and park yourself to block all the others,
then you do it again for the bottom room.
If you really wanted a little more speed-tech you can technically outrun the bunnies and release them (from the Right side room) and get the top room key and just barely have time get into blocking position. Thank you my telling me this my guy.

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Well, there aren't that many problems with the version being ran now. The only issue that we have gotten with this version is this one, which can be worked around. We will keep this suggestion in mind until more problems arise with 100%ing the game. Thank you for bringing this problem up and helping solve the issue.