With scheduled maintenance earlier today, we applied the following hotfix:
Enchantments on gear should no longer count as helpful auras. They now count as passive auras.
There are still some enchantments occupying helpful slots – notably, the Arcanum enchants that will come from Dire Maul and other enchantments that are applied via item rather than via the enchanting profession.
This was the case in our 1.12 reference.
Thank you very much!
Source : Blizzard