Good morning,

I experienced a visual bug in game, and from the looks of it, it's not related to graphics settings.
I had a BK-18, with no round in chamber, and a stack of 2 bullets (7.62x39mm) on a table that I found (possibly a regular loot spawn).
The game gives you a option to load in a round to the BK-18 by just looking at the bullet and "left cliking" it. Normally, the character loads in one of the bullets from the (2) stack, but after the "load in the chamber" animation the stack disappers.
The bullet is physically loaded in the gun but the stack is gone. The only way to see the stack is by opening the inventory and looking at the "ground loot" (left section).