Where is it?

Hi there. I think I am stuck at a point due to a bug/glitch. I cannot get past the sliding bookshelves n the library because I am always "pushed" back although I got past them. I think the timing is way too hard (can't tell for others but I tried for over an hour now and never was able to make it). Also this passage seems very buggy because the invisible collision areas of the shelves can hinder you getting past them in first place. Am playing on MacOs. I have the shorts btw ;-) Am I doing something wrong...

I couldn't find how to do that, and have been stuck in night mode and running in circles for a while now. Please help! Awesome game besides that :)

playtime of 2 hours ?

Game has been dropped?