Other mistake: When the FBI agent says "Maybe it's time to get a real job" his partner can be seen mouthing the same words.
Other mistake: Whilst Ricky is fighting Wong Chun, White God attempts to sneak away by getting into one of the dumbwaiters, but the warden shoots him and he explodes. The bullet is shown hitting him in the face, but given the position of White God's body and where the warden was shooting, this would be impossible. When White God crawls into the dumbwaiter, the pantry door is shown closing behind him, so the bullet would have been blocked by the door and would have made it impossible to hit him in the face. (01:25:52)
Other mistake: The bus Frank is in crashes through a wall of items, at speed, but no visible damage is done to the front of the bus when we see it later. (00:55:05 - 00:55:40)