If you land on a platform just right you can play your landing animation and then immediately slide off the platform, which got me trapped in Pointless Connection's little side room with a burger once (since i couldn't properly land on the platform i needed to to get out).
Also, there seems to be some climbable tiles that you can't actually climb and trying (even accidentally) locks you into climbing in place until you're interrupted- i got this to happen in Unheimlich so I think it's to do with the red key doors overlapping the climbable tiles.
Ah that would've saved me some health. I knew you could do it once you'd grabbed onto something, but didn't realize you could do it after committing to a climb.
Also, seperate thing but if you backtrack through the tutorial area and go up the cliff to the left of where you first drop down (where the Z to jump text is) you get trapped in a null area with nothing in it.