this is a bit of a rare issue but I'm still surprised I haven't seen anybody report this yet, this bit of slope sticking out can kill you as the wave and also sometimes as a mini ufo for some baffling reason
ID: 127476498 this is just a copy of the latest version of the level where I have lined the slope hitbox up correctly and it still looks the same visually
Edit: Its not a hitbox issue or 2.2 related it seems to only be caused by cbf which is why this was never found yet