For anyone who doesn't want to read 4 pages of replies, the solutions are these:

Set the players health to 100 in OnPlayerDeath.

Code:

public OnPlayerDeath(playerid, killerid, reason)
{
    SetPlayerHealth(playerid, 100);
}


And the other solution was to use ClearAnimations, again in OnPlayerDeath.

Code:

public OnPlayerDeath(playerid, killerid, reason)
{
    ClearAnimations(playerid);
}


Note: I'm not sure if these work, I'm only quoting them from the topic.