I would have this problem a lot when carrying multiple protector cases ammo cans and first aid kits. Whats even weirder is it gets tied to a specific player near you if you move far enough away from that player it stops desynching. It can be tied to an item in your inventory as well if you throw out the bad item and move far away from it or the server resets the desynch stops. I don't carry multiple containers just one of each type and I haven't had the problem since.