Final map boss bug in mirage area

Hi, i was in the mirage area of the map and got "Final boss drops 3 additional divine orbs" but i couldn't kill the final map boss. It was in city square map and i could see the boss but it wouldn't interact with me. I'll add the screenshot that shows the boss standing there.
Thanks!

https://imgur.com/a/Mmz6dnx

Same with me. had two bosses because of the map modifier. City Square. They could AOE me but i couldnt hit them and they were frozen not moving. This occurred inside the mirage at the edge yet they were still inside the mirage.