Undersea mines' background changes

[daring gulch]

I can see structures in the distance too. It just randomly changed when I went through a doorway. This is the 10m cave.

steam v1.1b-1236
keyboard & mouse
save file attached + 2 images

[granite thunder]

Hiya @daring gulch! Thanks for notifying us about this. 🙌 May I ask if you have tried to restart the game and back to the same area again to see if the issue persists?

If you're able to replicate the issue, a video capture it would be very helpful for us to investigate! Thanks again.

[daring gulch]

Update: The issue still persists in the 40m cave. Starts at around the 4th room you enter.
Restarting did nothing.
Steam v.1.1b-1236