During a goblin fight, Gale got pushed off a cliff and fell into the area below the goblin camp. (insta kill/inaccessible)
The game warps gale back to camp where his weave stigma thing starts killing Astarion. I didn't know this until I beat the encounter and went back to camp to find Astarion dead. I noticed that when non-active party members die in the camp
, they perma die. Not even the skeleton can rez them.
I think a solution would be to put gale a little further from the rest of the group just incase something like this happens and/or don't let party members be perma killed unless the player kills them.