Episode #4.2 - S4-E2
Audio problem: Florence talks about the financial problems of the surfing school. Doing so, she says that they have two mortgages and they "are behind in both." This last part is pronounced with the camera behind Joséphine Jobert, but the timing between audio and jaw movement is off. There's also a little jump in continuity with her left hand away from the sheet/on it. (00:35:10)
Answer: There's probably no particular reason. Sets and props on long-running TV shows often change as needed and for various reasons throughout a series run.
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