Yeah it was a bug, it worked when i refreshed the page. But i still couldn't find the 3rd ending tho (i already found the normal ending and the one in the security footage room)
Now i just have to get it. Also there is a little visual glitch (i think you'd know, but just to be sure) when you turn the 'this is up' room after you took the elevator, you can see the elevator clipping through the wall. Thought you might wanna know before the jam ended, unless this is a part of some puzzle im too dumb to see lol