Good to know this issue isn't unheard of! We've had a dramatic last little bit, but it was badly undercut because this bug set us back a couple of hours of gameplay. Had to replay through the whole thing. And then the host crashed before we got a chance to save (we were dropped into the middle of combat and so talking to get rid of the black speech bubble wasn't an option) and we have to play through the last big fight, reselecting the dialogue options we choose.
