Binding a key for AOE does not work

[Cendres]

I have tried pressing Z, which is automatically bind to turning AOE on and off after patch 1.18, and it does not work for me, that or it doesn't leave a text saying that AOE is turned on and off as you would type it.

Yep! Was experiencing grief with this today with protect and shell. I thought I was mis-pushing my macros at first but no, sometimes when you activate aoe the text in the chat window says it is activated but when you cast your spell it is still in single target.