The main idea is really cool and original! However, I wanted to finish it, but because of the bug where the view tends to move itself on the right, I didn't want to try more in order to finish it (even if I like a lot the game). Apart from that it is a nice game!
Viewing post in Delver of the Depths jam comments
I noticed these steps in order to get this bug:
1. In First Person phase, move the mouse slightly
2. Then stop the movement with the mouse
3. Notice that the view moves itself on the right
5/5 on my side
Moreover, I noted that the bug stopped if I moved again the mouse but faster on the left, then stopped the movement -> The bug disappeared.
No problem! It might be specific to the equipment, which is quite hard to fix properly unfortunately.
However, it reminded me a bug, that I had a long time ago, where the values from camera movement input weren't properly reset after stopping using it. I shared to you this information just in case, it might help you.