I'm curious, could you elaborate on the physics problems you were having? I'm unaware of any physics bugs(I very well could have missed something), I'm wondering if there were mechanics I didn't tutorialize well enough. Also, were you able to complete the game?
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Not sure if it was intended but when hugging walls, I was able to go pretty much anywhere I wanted as long as I mashed the gravity button. The gravity button didn't always fire when I expected it too. I got to machine N (at least I think that's what it was) and turned on it's power. After that I just struggled too much to make any more progress.