Mainly on the slanted versions, Ive noticed that their collision boxes are squares and not ramped as Id like them to be. I noticed when I tried to walk under the slant while tiny and thought, "Oh man, thats lame. I want to go through there."
The vertical book has a square collision box, which is perfectly fine. But as my diagram shows, so does the slanted versions.

Id like the collisions to be updated to include a slanted collision on the slanted book.
(Im making something where players are mini and having a square collision box on such a brick is real inconvenience)I want to ask Siba directly about this as well, but I also wanted to see if anyone else could do this.