Audio problem: You can tell that Tia is lip syncing in the final song ("Oh holy night") more so on the last few lines she closes her mouth before the song ends.
Audio problem: When Clouseau is in the training facilities and hears footsteps approaching, the feet sound like they are wearing high heels or football boots. However when the Russian trainer appears he is wearing trainers therefore his footsteps could not possibly have made the noise heard on his approach.
Audio problem: When the kid's dad and Santa are singing about believing in Santa their mouth movements do not match the music well.
Audio problem: After reaching Alpine via the Gornicke bus, when Bob says, "Some of my behavior on this trip might be misconstrued as an insult," Bob's mouth/jaw does not match most of his words. (01:25:10)
Audio problem: When Brad's team is taking ground balls, he is hitting with a wood bat but it is making a metal bat sound.
Audio problem: In the pool, when Max says, "What is it, Major Lawrence, that attracts you to the desert?" we hear his voice, but his lips are not moving. In the next shot, his mouth is now moving. (00:34:30)
Audio problem: After Brian and Mary put their packages into six side-by-side (horizontal) lockers, Brian closed five doors then his hand was too far away (and the door off-screen) to be closing the sixth one yet the sound of it slamming shut was made. (00:32:05)
Audio problem: When Tripp's 'son' wants more snacks Tripp says, "And a bag of..." but his lips don't move. (00:52:30)
Audio problem: In the scene where Maggie and Steve are running outside and come across Richard standing on a mine, he says something along the lines of 'This whole place is covered in mines'. As Maggie starts her next line, a voice in the background shouts 'no its not! haha!'.
Audio problem: Near the end of the movie Mullet Fingers is making a final attempt to get the construction to stop. At one point he says "dang" but his mouth says "damn".