There seems to be some shenanigans happening with wall item placement. If you float stuff like windows or paintings, especially backwards, you may run into difficulties. I tried to make a vanity with the kan-e-sana painting flipped around and with the new collision changes it just snaps to the wall, so I have to place the vanity in a corner and let the painting float rather than have it against the wall like I wanted it to be (and had it once, in an old build).