When he stops at the edge of the motor pool while chasing Gordon, Victor's gun hand is at his side from behind, but up by his face in the very next shot.
At 12:02 the slide is locked back on Zsasz's semi-automatic pistol which indicates it is out of ammunition, yet he fires several more rounds.
When at Gordon's apartment Butch is sitting beside Barbara on the couch and buttons his suit jacket. In the next shot as Gordon enters the apartment Butch stands and his jacket is redone.