Audio problem: When the monster is climbing up the laboratory steps following the music Frau Blucher is playing on the violin, she says, "Your grandfather would play this music for the creature he was making", her mouth does not move.
Audio problem: When Taggart kicks over the fake building, he turns around and says "it's a fake, we've been suckered in." But his mouth is wide open and doesn't appear to be saying anything at all. (01:21:25)
Audio problem: The sounds of Winslow walking up the stairs aren't synchronized with the movements.
Audio problem: Pay phones are programmed to drop the coins into an internal storage box after the receiver is placed back in the cradle. But at the airport, when Whitfield hangs up on his mother (and he didn't call collect), there's no sound of coins dropping. (00:38:00)
Audio problem: A lot of the sounds for punches and hits occur before the blows are even landed.
Audio problem: When Julie is on the phone with Guilou, it is clear that the audio heard isn't coming from the actual phone. It sounds more like the audio is coming from someone standing on the film set, off-screen, rather than the phone itself. (01:50:18)