Jonathan Kidd wears dark sunglasses during his dealings with Mensa and his goons. But each time he gets a profile in close-up, he is only wearing his eye-patch instead.
Around 4 minutes, the museum guard's collar disappears as he turns his neck, then reappears in a subsequent shot.
Around 9 minutes, when the criminals are firing their weapons at the Voyager, Jonathan Kidd can be glimpsed in the cockpit, even though he is part of the criminal gang and not inside the ship.
Around 19 minutes, when Kidd says "Got away? He couldn't have!" his eye-patch is on the wrong side (his right).
Around 3 minutes, as Eric Mensa first greets Kidd he is standing in front of his conference table in a close-up. The shot then changes and now he's seated at one end, with Kidd standing at the other and the henchmen Bruno and Rocky on either side. But the background, including the table, is exactly the same in both shots.