Derelict Mansion boss not starting

+1
Entered map with Delirium on map. Breach also present.
All cleared but boss fight won't trigger.

same here, with breach, deli and ritual

Same....clearing so many maps around for the deadly boss and I used expensive map there...ofc there was also delirium and the npc is just dancing and not starting:

> https://prnt.sc/Kf80AMXchak6

Tried relog and everything..nothing changes.

Same, Grand Proj, abyssal depths on map, delirium, t15. Fully cleared and bosses won't leave their dancing idle state.

Sama here. Delirum modifier activated on my 115+ rarity map. Feels great..

+1

+1 Tier 16 delirium. Boss won't engage. please fix this GGG

this game is full of bugs...

boss not triggering maps not connected to the atlas.. [Removed by Support]

delirium +16 map

Same problem. It was a T15 map for me. The map contained Delirium, Breach, Ritual, Expedition, and was Irradiated. Interestingly enough, I had the "delirium fog never dissipates" mod on this one, and the map was showing the Delirium wasn't completed, even though I spent like 15 minutes running around the map trying to find all the monsters. Did full three circles on both floors checking every single room. At the end, it was still showing "3 monsters remain", two of which were the bosses, but this one last remaining monster was nowhere to be found.

Still happening. Map had delirium infused (not the mirror) is all I can think of.