Boss room in the copper citadel cannot be accessed after dying in boss fight

Running copper citadel with 2 available respawns. Boss killed me, but died shortly after my death due to poison. I saw that loot dropped. After respawning I cannot get to boss room to get pick up my loot, because boss room is not accessable.

Same thing happened to me just 5 minutes ago. It's bullshit

Same story, my boss died soon after me thanks to my totems, but result is the same — loot left in the room completely inaccessible :c