Been getting a bug recently while working on a custom map where I will randomly (but pretty often) clip through the floor and/or walls when playing the map I'm building. This never happens in the editor mode, only when playing the map back. Also of interest, when the bug occurs all the enemies also clip through the floor, and we all fall into the void together.

It's only started happening since 3.4.1 so something must have changed with that update to cause it (the new lighting is great btw). I originally thought it triggered when landing on blocks which intersect with each other, and that might still be the case, but I just got it from stomp-killing an enemy as well. Haven't extensively tested other custom maps, or older custom maps. It has made the one I'm working on usually unable to finish a round -- which is a shame because I was going to publish it now the workshop bug is fixed lol.