Audio problem: When Abby, an elf, is about to tell Santa that Charlie is on the naughty list, she says something about 'Brazilian cocoa beans'. As this line is heard, you can see that her mouth is moving completely differently from the words we hear.
Audio problem: When Willy Jones and Moly are slapping each other in Moly's donut shop, Moly says "hey buddy" but his lips don't move.
Audio problem: When Kevin turns around from the monitor and sees Prescott for the first time, he screams and then it cuts to a different shot a bit too early, cutting the scream off too early as well.