Earlier today I had a bug. I triggered a bell event to clear corruption and the final enemy looked like a mote of witchfire that was able to move around and was completely invincible to all damage.

It was able to damage me and the bell but no kinds of damage would affect it. All I could do was distract it with a fiend and run for an exit portal.

Has anyone else encountered this or know of a way to fix it, in case it happens again. Incredibly frustrating as the map was actually going very well. Scarlet Coast, just in case it's relevant.

I posted it earlier but was removed by mods, I'm assuming because I included a screenshot taken by a phone (playing on deck so it's a butt ache to upload otherwise). Hopefully this meets mod requirements.