After driving a V3S, or simply being behind the wheel when it's on and getting out, your inventory gets "bugged" you will be unable to drag items to your hand, and if you are able it will only work with usable items like let's say a water bottle or a pipsi.
The animation after dragging or using the hotbar to get your desired item will sometimes "work" or slowly start, but the item will NOT be SHOWN in your hands.
Since i had a water bottle i figured out i could use that, however i could not use a gun except for throwing it with "G" but that would delete the gun from the game for as far as i know.

I've tried this twice on experimental, it happens both times.
A simple relog is enough to fix this.

Oh and sometimes you will also not see you changing your Hats or helmets.