Revealing mistake: During every flashback of the altercation leading to the homicide, the beer bottle completely shatters from just a touch like a sugar glass movie prop. The first time we see the flashback, it is also clear that the minute pieces fall off the table in the first shot, but in the reverse angle, the bottom of a broken bottle is resting on the table.
Continuity mistake: In the kitchen scene at the beginning of the movie, the protagonist's pregnant wife jokes about him saying something "wildly inappropriate" to the judge to be exempted. In close-up, she has no hair running down the front of her left shoulder, as opposed to the rest of the scene.