The Immured Fury Bug in Ritual

https://youtu.be/4l-aiumdN3U

Hi,
if you kill the Immured Fury boss in a ritual, you can't kill him when he is revived. So, the ritual cannot end and you are stuck inside the ritual area.
The boss is invisible in the arena and only his breathing sound and his structure are here. You can go against him, he is physically present but you can't attack or damage him, he is not targetable.
TY for fixing.

also happened to me, bug report 301989080 submitted while I'm in the ritual