I noticed, in every version of the game (originals, bootlegs, clones, etc), that in the second docking sequence of the attract mode, that the ship(s) always end up below the "III" ship. The sequence ends in docking failure. I wonder if the bug that you pointed out affects this sequence as well. Your video doesn't reach that part of the attract, but have you noticed this at all? I'm curious if this is just the natural behavior of the game, as it's been many years since I've seen the game in the wild...
"One of these days, I'm going to cut you into little pieces!"- Nick Mason, Pink Floyd