------------------
1) Purchase a backpack.
2) Go to hangar (Station hangar, not tryed in persistent).
3) Go to kiosk and drop the backpacks on the ground from the kiosk.
4) Move the backpacks with the tractor beam to the cargo grid of a ship.
5) Equip the backpack from the cargo grid.
6) Equip some weapons on the backpack or add some items inside it (Optional).
7) Go to the hangar's elevator and press lobby.

What happened
-------------
Both backpacks (mine and my companion's), attached items and contents dissapeared.

My hypotesis: They were somehow still attached to the cargo grid of the ship and despawned when the ship was auto stored leaving the hangar.

What should have happened
-------------------------
Backpacks should not dissapear.

Workaround
----------
No.