Episode #2.8 - S2-E8
Visible crew/equipment: The cameraman is reflected in the glass of the door during the first shot of the episode, as from inside the house we go outside. (00:00:20)
Visible crew/equipment: When Mr. Jenkins arrives at the hotel at the end, a light screen is reflected in his sun glasses. (00:43:05)
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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