When you try to search a dead corpse with a companion and then quickly switch to the main character and order him to search the same dead corpse again (before the companion could open the corpse), then the "already in use" message pops up. Switching back to the companion does not show that the corpse is open and selecting the main character again still yields the "already in use" message. Even after walking away and coming back you can no longer interract with the corpse.
