The problem happens when there's an atdm:target_set_frobable inside a chest or drawer or whatever, targeted by the lid or drawer.  The contents can't be frobbed until the lid or door is fully opened and the atdm:target_set_frobable flips the switch on the loot from unfrobable to frobable.  If the door opening is interrupted before fully opening the player gets the glitch.  This happens very easily on stuff like desk drawers where the player is standing right in front and the drawer stops when it