Master Vule's corpse immediately poofs when you kill him, which does not allow his eyes (crucial progression piece) to be looted. Even though the items appear on the advanced loot, they are not lootable. In search of a "hidden flag", I tried to zone in and out, and unfortunately, there was nothing lootable. Nothing seems altered in the Misty quest either. I'd assume this is easily hotfixable, as it's an instance.