Looted Item As Corpse Decayed disables interface
 

Yesterday I was looting a corpse and clicked on the item at the last second as the corpse it was on decayed. I got an error message and then was unable to use abilities or open any menus. I was able to move and this seemed to fix itself/reset when I was killed by a roaming mob and respawned.

I don't remember the specific error message but I did submit the error text as a petition before I knew this forum existed.