Map Boss Room + Delirium + Abyss = can't see anything

Abyss inside the map boss rooms has been really fun. BUT there are certain rooms where it is impossible to see anything. Especially with small rooms and large bosses like that big skeleton dude that crawls out of a pit.

Could we maybe get the Delirium fog to dissipate when inside the boss room?

One time I lost my cursor for a good 5 seconds. I'm even using the pink cursor because it's the only one I can track reliably when the screen explodes with noise.