Specifically the weapon Named: "Enlightenment" is bugged. It is a weapon for the 'Apprentice' hero. However when I unequipped the item it shows as 'Equippable for: The Apprentice' even though he was just using the item.
This was a weapon equipped before 'Trials Update' came out. My version of the weapon was a nightmare 3 weapon before chaos came out.
Same bug, it happened today when i returned to game after some time. i hope they can fix it