Discovered search,
Found issue already being acknowledged

Also had this bug with 2 different results.

I had mosin on my back and SKS in my hands.
I logged off and login.

1)SKS spawns on the ground under the player and can pick it up.

2)SKS creates its own inventory slot(as it is normal with equiping 1 weapon in hand)and draging it into hands makes the player wield this 2nd weapon. However in this situation the weapon becomes invisible from time 2 time and after 5 minutes the SKS "icon" was gone from the inventory and/or hands. The SKS was eventually destroyed by switching to the mosin(no SKS was found on the ground).

Confirmed, mate of mine switched weapon and slid of buildings. happened to him 3 times now

confirmed, dont know if its global or the sound decay over distance doesnt work