It can also happen with the new KA-74 in the tent. Everytime I add one to a tent I can't pull it out or most things in the tent either.

It also happens with the KA-M when you eject the mag while in your hands, and the weapon in your inventory during the animation. The gun still thinks there is a mag in it. But there isn't. You will still be able to fire it but nothing will happen.

It also happens when you fill tent, vehicle, barrel inventory to full.

This bug breaks the storage mechanic of the game.