Audio problem: Counsellor Troi visits Picard in his quarters after he finds out that his brother dies. Listen to Picard say "Counsellor - er". There is an audio editing mistake of some sort where you could clearly hear that his voice was dubbed over the original, the original being off by a fraction of a second. The "er" sound from "Counsellor" is repeated.
Audio problem: In Stellar Cartography, Data has to reposition his chair to work on another panel. To do so without getting up he places his hands on the panel to pull himself across to the other position. As he does, there is a sound of an electric motor moving him. But as the scene draws to a close and Data gets up, you can see the chair is a dressed up standard office desk chair, with casters, no motor, and no tracks for it to slide on.
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