This isn't a new bug, per se. But it's a bug nonetheless.
Trinkets such as
Battlemaster's Perseverance does not work. You can use it, but it doesn't increase your maximum health by 1750 for 15 seconds as it should.
Edit:
Also, I'm not sure if you are aware of this, but better safe then sorry
You are unable to equip the
Medallion of the Alliance /
Medallion of the Horde trinkets. (If they work as intended or not I'm not sure about, since I haven't been able to try it out.)