Nameless Seer missing

Hello!

I would like to report a bug: I opened a map in my hideout, Castle Ruins T16, which gave me the modifier from Necropolis mechanic "Final Pack spawns the Nameless Seer on death", for one of the monsters.

I cleared the entire map, including the boss, all the extra content (Rituals, Harvest), everything. Corner information telling there were 0 monsters remaining.

But Nameless Seer didn't spawn... and it would be the first time that I would see him.

I tried to close the game and re-open it, and even asked a friend to check in my map, but we couldn't find the Nameless Seer anywhere.


screenshot 1 - necropolis modifiers and minimap, no nameless seer


screenshot 2 - boss room and friend trying to find nameless seer


screenshot 3 - harvest mechanic, same map, no nameless seer



edit: I don't know if I submitted the images the wrong way, so here is the link:
https://imgur.com/a/m1GN2Se

happened to me to on toxic sewer, i was doing rituals on the map, maybe ritual took his spawn space for me, but he didnt spawn with 0 monsters remaining also.