Thank you for playing!
Yes level 7 was an odd ball. It was the only level where I designed the puzzle around the art/layout rather than the other way around. That's because level 7 is based on a real living room and was an Easter egg for my friends/family. As a result, I had to put a window on the far, invisible wall, and it wasn't very obvious.
The orientation of the objects did not matter unfortunately. Basically some objects are just deemed "tall enough" and other's aren't. Under the hood they are all just cubes either with or without a collision shape to block some ray casts.