There's a simple visual bug with the stack mechanic on this fight where the circle will always appear gold (safe), even when not grouped with anyone. It doesn't change to indicate that the mechanic requires multiple players to hug up either, which was very confusing at first trying to understand what it required when running it blind or trying to help others not die from it.
@Djennku, PCNA.
Grand Master crafter, all styles and all furnishing plans known pre U41.
Vamp and WW bites available for players.
Shoot me an in-game mail if you need anything, happy to help!