Dealing with this issue now, just encountered Minsc and fake Jaheira in sewers. Lots of suggestions on Reddit but nothing fixes this. Tried to pick up Minsc's unconscious body DURING combat but you cannot. Once he wakes and you fight him again, non-lethal doesn't work even if it's turned on. After killing him, Boo is there sobbing. Jaheira disappeared from my camp, but she's confirmed to be there in the final scenes after you beat the game (per others' testimony). I wish they'd fix this. This game could be so much more fun if not for all of the bugs and inconsistencies. Does Larian communicate with the community? Do they announce acknowledgement and plans for fixes or anything? I'm so upset right now, I don't even want to play a second playthrough UNTIL they fix things like this. I stopped playing Starfield because of similar tech issues and missing content. Ugh!