Audio problem: When Ron and Harry are walking down the corridor towards Potions class, Ron says, "...Quidditch trials coming up, I need to practice," but his mouth is not moving and/or not in sync with that dialogue.
Audio problem: Landa enters the farmer's house and talks to the girls but a side angle shows his mouth not moving, despite sound coming out. It only starts moving when he says the word 'Monsieur'.
Audio problem: As Bison's car drives through the angry crowd, one of Bison's men fires a gun into the air. It is heard firing twice, but the muzzle only flashes once.
Audio problem: We get a shot of a Predator drone taking off, and it is driven by a propeller. However, it makes the sound of a plane with a jet engine.