I drove and parked a V3S on the airfield on flat ground. Two infected clipped into the truck so I decided to kill them each with a glock shot to the head. One corpse, which I wasn't able to loot, was clipped into the engine bay and the other corpse was on the backside of the cabin which I was able to loot.

I run off to some barracks to go looting, which was out of view of the V3S and ~50 meters away. I get the common TAB crash bug and when I rejoined the same server my game gets stuck to about 0-1 fps. I wait a few minutes to see if my game recovers from the low fps, it doesn't so I rejoin once again. Still the same problem, very low 0-1 fps. I decided to wait even longer to see if it recovers and ~7 minutes it does, my fps is back to normal at around 60+.

I run back to the parked V3S only to find the corpses gone and the vehicle hovering 2-3 meters above the ground. I am able to reach and jump into the driver seat, it is still hovering. Once I turned on the engine the vehicle is back on the ground.