Hey,
Recently I've noticed a weird bug while building in grizzly hills. I sued some big objects, to cover a place, and once I moved the objects downwards, when the object's spawn point went below the texture, after a certain point, the object becomes only visual. Meaning you could walk through them like they aren't even there.
I've made a basic gif below, show what I mean. If this was reported already, I apologize. I haven't found anything related to this in this section.