That is not true. It is considered a game bug when something in the game is not working as intended. But, @Phamdemic confirmed:
And the Stone Gauntlets are working as intended. So, in this case, it is NOT a bug.
You should read the stickied thread, How to Write a Good Bug Report for more information.
Blizzard does not respond in these Bug Report Forums. Other players try to help out those having issues so they can either understand how the game works or get past an issue to continue their adventures. (Like with a workaround). The point being, if you wait for Blizzard to post the solution to a game bug, you’ll be waiting a LONG time.
In the case of the Stone Gauntlets, if you prefer to use a “workaround” rather than learn how to properly gear up your Character, then that is your choice.
Like you, I was merely providing information about how these (Bug Report) forums work. The Stone Gauntlets are not bugged and necro-bumping threads has ALWAYS been frowned on in ALL Blizzard Forums.
In Summary
If you still think the behavior of the Stone Gauntlets is bugged, you should first search for a current thread on the issue. If you do not find any that are more recent than 6 months you should create a new thread.