[Client] Stinger still missing from Item Sets in the Client (as of last patch)

Client bug: Stinger is still missing from Item Sets in the client. Attempting to view Stinger shows it no longer exists. Attempting to look at items Stinger builds into (such as Nashor's Tooth), shows a blank spot where Stinger normally would be. Clicking this blank box leads to nothing.

Basically, the system bugged out to where Stinger no longer exists on the client. This bug has been around since last patch (8.6).