I stumbled onto a gap in the floor at the entrance of Ghost Hotel when playing the CoF Purple 3 challenge.
This gap makes the player sink into the ground which you cannot get out of even with "V" and it will eventually kill you.
This is pretty annoying when you're trying to compete in a time challenge so i hope this gets fixed.
I happened to be recording so here's a clip of it happening.
https://www.youtube.com/watch?v=uREj4NZHyEs