Continuity mistake: After Ilia is abducted by the V'Ger plasma energy beam on the bridge, her tricorder falls on the chair. The chair is facing a different angle than it was before. Also, you can see the white tips of a pair of shoes from someone standing next to the chair on the left. Presumably, this is supposed to be Kirk, but he is too far away to see his feet in that shot.
JamesT
9th Jun 2018