

I’m pretty sure when you get Klingon B’ellana the original is put back to normal in dialogue so that model/portrait makes sense.
But like for heroes disappearing between sectors, were they on quests? You can definitely leave people behind if you don’t fully resolve events.
Anyway, bad luck with the bugs. I’ve had it crash a couple of times or occasionally show an empty pop-up (which looks like it may be fixed now) but nothing really game breaking. Never lost more than a few cycles for reloading.
















The hero roster will list everyone you’ve unlocked in a run, including the dead / left behind to help you figure it out. Characters can cycle off the bridge if they are injured or otherwise busy with story too, so double check Chakotay and Tom are actually gone and not just at the bottom of a list of 30 injured crewmen waiting to be treated or something.