Provenance - S1-E19
Audio problem: When Sarah goes to touch Evelyn's shoulder, you hear Sam's voice telling her to stop, except his mouth isn't moving at the time the phrase is being uttered. (00:23:50)
Audio problem: In episode 1x08, "Swimming With Boyd", when Lucas is talking to Julie on the street, the audio looping as he says "Listen to me" is quite noticeable - his lips don't even come close to matching what we hear.