Celeste pushed under map by venator shotgun

[Lightningspirit]

Got shot by venator shotgun after walking down the stairs in mid and fell through the map, got permanently stuck in a space next to the midboss. Unstuck nor disconnecting did nothing as there was enough space in the wall to walk and jump.

 

[Layne]

I had a similar glitch while using Drifter, I used his ability that makes him lunge, and when I jumped into the stairs I clipped under the map very similar to you.