Game randomly changes equipped ammo to an accessory

Platform:
PC

Steps To Reproduce:
It’s random when it occurs, but happens during a reload of an empty magazine.
Has happened a couple of times with Kpist using an Acog, Extended mag., 9mm FMJ, Suppressor.
Shot out entire mag, and it converted my remaining bullets to an extra extended mag.
I can then take of and insert both Kpist Extended Mag. When I restarted the game, the extra Extended mag was gone and all of the ammo. I lost all ammo equipped on weapon, and all of the same type of ammo in inventory.

Images / Videos:
Generation%20Zero

Host or Client:
Client

Players in your game:
1

Specifications:
Win 10 Home 64
AMD Ryzen 7 2700x
Nvidia GTX 1080
16GB Ram

It happened again, same way. But this time it duplicated the Acog sight. I shot until the magazine was empty, and then the remaining attached ammo disappered.
Generation%20Zero%202

A similar situation on ps4.Only happens to the small and assault wepons when i put a scope to it.