that's a weird one. (today. sorry don't know game #, not sure how to get it now)
I set inheritance to fortress, and then tried to trash an estate/fortress using governor.
the game just hangs "waiting for Severian-666" after I selected the estate, not responsive. I reload, nothing changed except... the estates look like normal estates in my hand, not fortresses any longer!
the weirdest part being, my opponent was doing the same exact same thing, and it worked for him.
however, my bug was reproducible: I used "undo" and tried a few more times, same action or later, with the same result.
PS: I see quite a few other bug reports for inherited fortress, so I guess not so weird after all
I think I was the opponent in this game! I remember the bug well. Was very frustrating and exactly as you described.