Transparent spent cartridge cases

[q800]

Wth?

https://imgur.com/a/UmTtIda (you can see some cases with thermal adaptive camouflage abilities near tire)

 

This goes along with marpatt camo "missing texture" thing in P-51. But Idk if those 2 things are connected.

 

Any ideas how to fix? I have terrible OCD for details...