This is rather annoying, and makes inventory management that much more of a pain in the ass. It'd be nice if there were a way to make them stack, though I understand the reasons why they can't be. Maybe you could make things snap to a set of specific degradation values (like every eighth) every time they're picked up?

there is a setting that is called: "track inventory item age" if you switch that to off, it works perfectly.

I have a fresh idea on this and plan on revisiting it next update. Might be able to do away with the annoying one stack-size on buildings all together.