Ah, that bug! I remember it (no so) fondly!

I'm normally diametrically opposed to Napoleon, but he's right! You'll have to manually guide them.

When I last did that mission when I was a fresh off the starship newbie, I didn't really know how to properly move my team. So I just crawled through the map slowly, making sure they didn't get caught up in railings and stuff like that. Good times. :-)