So yeah, appears that i have reached limits or bugged out everything, after "interaction" in court screen goes black and it becomes unplayable.

Also weird "ghost" characters appear without hair and etc. cloning one of the existing characters names.

Here is my save https://limewire.com/d/CZf2z#YXe0sAkEiR

Similar issue to this. It happens during raids. A character that is supposed to be in a room is invisible, and instead of a battle screen I get a black screen with no way to target attacks. Best I can do is use bomb, collars and instant cast spells/abilities to hopefully end the fight. ALSO, at a certain point, the servants will stop eating and starve to death. I've tried moving them to different rooms, they won't go. I tried deleting the room, it didn't matter. I tried reloading a save, thinking it was just bugged; Nope.  
At this point I think I broke some kind of game limitation, or did something weird to make the save unstable and unplayable. No idea.