When Johnny pops his coat buttons with pride, the next shot has them still buttoned.
Soon after Johnny arrives at the asylum, Caliban rises up out of the floor on a lift and closes its lid twice between shots.
Roman candles would barely light and be put out almost immediately in the torrential rain depicted.
In the beginning, the reflection of the vehicle which swerves stays stationary as seen in the mirror.
When Johnny flies out of the door into the rainstorm, you can see the wire that holds him when he crashes into Rigo.