Warfront on use items working in Brawls "Maybe all bgs"

The on use Items from the new Arathi Warfront such as:

• Rumbling Essence - Item - World of Warcraft
• Cresting Essence - Item - World of Warcraft

Clearly states requires Arathi highlands but worked in the brawl I was just in.
Also tool-tip states a 3 sec cooldown might be able too stack a bunch of them for some fun!