Obviously this is a minor thing, but just wanted to point it out.
EDIT: Oh, lol, and just noticed too, in the upper right, that underground belt segment is showing under the structure above it (flamethrower).
EDIT 2: Ah, and as I now saw that with the underground belt and flamethrower, I just tested the belts against other objects and am seeing similar behavior. So I suppose this issue is more belt entities (belt, underground, and splitter) appearing under other objects.

