Audio problem: When Troy and Gabriella are singing "Everyday," Troy sings with his microphone away from his mouth numerous times during the scene, yet he is still heard just as well, and not at a lower level, like he should be. (Within the context of the film, this is sung live on stage and is not implied to be pre-recorded.)
Audio problem: When Milly tells Jason about Johnny, Jason tells her, "If you want me to say it, I will stop seeing him," right after that he says something else, but there is no sound. Looks like a word starting with the letter F.
Audio problem: When Ben and Jason are talking over the phone, after Jason tells Jonah, "Your mom is already there", we hear Jonah say, "Uncool man," but his lips are mouthing something different. (01:47:05)
Audio problem: When Rasputia is hitting the crowbar in her hands the sound is out. (01:06:40)
Audio problem: When Evan plays the guitar the first time, you can hear some chords and notes that aren't actually being played at all.
Audio problem: When Dinky is flirting with Lenny at the party, Rachel's lackies go up to her saying Rachel wants her, then Dinky tries to say something but somebody says "It's important". The only problem is nobody's lips are moving when we hear "It's important".
Audio problem: After Agatha slaps Walter, he rushes to the phone and turns it on. Genie says "Hi Walter, I missed you." but her mouth is out of sync with the words. (01:08:30)