I entered the code to the elevator and walked backwarts, I guess the wall glitched because I walked right trough it. I'm sure it's just a little glitch that doesn't happen often, but I hope you'll be able to fix it!
Thanks for the reply, I tried to investigate about a collider problem, and what you say looks like this.
I published a new version where I changed the walls. I hope it will fix the bug. I tried to do same as you said, and no problem.
