grim mango
In Cathedral Cage, I teleported the red crystal outside of the caged part using Area spell + Teleport, simultaneously cast by a Rhell duplicate, so the portal bubbles were mostly overlapping. I destroyed the red crystal to open the entry to the next area. I noticed at that point the settings menu was not showing up when I pressed the button. I did not try the map-specific button.
I entered the next area, Catherdral Communion, but the screen stayed a solid dark red colour, though I could hear controls being responsive via audio (magic book menu sounds, Rhell jumping/walking sounds).
Exiting the game and reloading fixed everything, it autosaved so it didn't lose me any progress.
I'm on the current up to date game version on Steam, and playing on Steamdeck (sorry for lack of screenshot, I'm not sure how to screenshot on Steamdeck).
Thank you for making this game, it's a lot of fun. 