1: Seems like it.
2: Turns out not just blood golems and ghouls. Looks like it happens to any party members that reach 0 HP. I had a Black Kalev repeatedly loop rampage on the final boss. I had my player character repeatedly loop an item use (had above 0 hp, tried using brown vial, enemy dropped my HP to 0, my player character was looping brown vial).
Oh, right. in the invincible mod, I commented out the lines for BP damage, cuz the reason I was using the mod in the first place was because I didn't like the dismembered arm/leg debuff mechanic. (but I still wanted some sense of a challenge).
How do I tweak the mod to allow being afflicted by some debuffs, instead of just outright being immune to most or all debuffs?