Rawlins' cigarette when he's obtaining his passport.
When the cop tells Ernie to move his cab, the police car had pulled up across the street. When Ernie gets into his cab, the police car is suddenly a lot closer.
When Ernie is waiting at the bar for Pauline, the bartender takes his beer bottle but in the next scene from the view of the bartender, the bottle is still on the bar in front of Ernie.
When Ernie Driscoll leaves the stage, the shadow of a crew member is projected on the wall.