Hmm... this is a problem indeed....
hmmm... I found a bug, but it's not like a bug that you said, where if im stuck on a wall. It's more like one of the things wont work.
I'm on chapter 2, and i'm stuck, because the boss door won't open. I tried the instant kill, and when i got back to the boss door, it STILL didn't open.
I hope you can fix this, because I sure do want to beat the game. Great game though.