The Elven Hero Staffs basic attacks have some insane range! You can attack chests with it from far away enough that it registers the chests lock as being opened but the chest itself stays closed, and you do not get the loot from it! This can be fixed by rejoining and there is nothing in the F9 menu.
Great comparison of a chest that I didnt attack at range, a chest that I did attack at range and thus cant open, and another chest attacked at range showing the lack of the lock model.