Continuity mistake: When Ladybug and Lemon first meet, Ladybug tells him he has a gun under the table, trying to hide the fact that he doesn't actually have a gun. However, in an outside window view shot, you can see both of Ladybug's arms on the table. (00:35:31)
Continuity mistake: When ladybug is sitting at the table with Lemon, and they start fighting over the pistol, Brad Pitt drops the gun's magazine out of the tub onto the floor. In the subsequent shuffle you see the bottom of the gun with a magazine still in it and immediately cut to it on the floor. The next shot after he grabs the magazine off the floor you see the gun with no magazine. (00:40:20)