Platform: PC
Mode: Hardcore
Difficulty: Torment 3
Bug Occurrence: Seething Realm Nightmare Dungeon At Boss (Spider Host)
Notes: I killed boss pretty quickly, but afterwards the spider host went invulnerable with a red glow around him. I could not target him and he kept summoning the spiders. It went around like that for about 5 minutes. I could not TP out and did not have any scrolls of escape so I had to ask someone to invite me to a game to exit out of the dungeon.
Thank you.