@EA_Demz I'm having the exact same issue after purchasing and right away (through Armory's purchase screen) equipping the (only available) blue Panzerbüchse skin. This is the only weapon skin I've bought the last few months and every round start the customization resets.
Here's also a report on the German forum about the very same issue:
https://answers.ea.com/t5/Bugmeldungen/Panzerbuchse-39-und-Skin-quot-Geschwacht-quot/td-p/8191465This seems to be permanent, I've tried changing to other skin parts or full sets at different parts of the game ("My Company" vs. pre-round vs. respawn screen, etc.).
