will try to do a vid will try and see if the problem is on official server too

When you put a barrel in the truck all items inside get stuck and you can not move Items out of the barrel only into it. You can’t drag the barrel to your hands or to the ground. It does not show the barrel in the back of the truck anymore but it shows when looking in inventory. Also can’t take crates out until all wood was removed.

I have just had this happen to me.
The truck seemed fine until i added a barrel.
Now i cant take anything or add anything from the rear of the truck to the inventory.
If i get onto the top of the truck canopy at rear of the truck i can take out the barrel and add or take from the inventory.
But removing the barrel has not solved been able to access the inventory from the back of the truck again

Small update it seems my problem was caused by where it was parked.
Looked like flat ground maybe not flat enough.
But i moved the truck and i could access everything properly