Arbiter of Ash can die after you have, and give no loot

Killed arbiter of ash on difficulty 0 (so i have respawns). he was in death animation as i died and a meteor fell off to the side killing me. I clicked respawn thinking i would just go again, but arbiter spawned in his crawling death animation. The room still full of impassible statues.

He dropped his skill book but nothing else and i could not reach the fallen object to continue the quest.

https://imgur.com/a/OcOyh5f --- link to pic

Same just happened to me, did you find any solution¿

Replying to bump this as it just happened to me as well. I can see a "Power Awaits You" but the statues are impassable so I cannot click it.