Audio problem: When Mrs. Hudson finds a package for Sherlock instructing him to open it before the trial, she says "I never even heard anyone knocking" whilst handing it to Watson, but the line appears to have been dubbed over as her lips don't match up with the dialogue.
Audio problem: Annie states that her phone went to sleep while trying to find the bullet. She uses her nose to wake it up and as soon as she does that, she can be heard saying "here we go" but her mouth doesn't move.