When Claudette walks to inform Dutch she has Lupus, she clearly sits on his desk. In the next shot she's standing and a tape dispenser where she was previously sitting.
When Shane passes Vic the Southern Comfort, the cap is clearly off the bottle. Yet, when he passes it to Vic, Vic has to screw the top off.
During the drug operation Shane says "Man, there's gotta be another way" when his mouth clearly isn't saying that.