So I made sure I tested every single macro that I could find googling before I wrote this thread. I just can't get it working, so there must be something with this patch build that is messing with it and that I'm obviously unaware of.
Like, I'm not even getting close to a 1 button macro, heck, best case scenario I have to press it twice to fully work. But even then, Arcane Power fades after pressing the macro for the 2nd time. So what it does is, it casts AP on first press, then AP fades and PoM is cast on second press, then instant Pyro is fired on 3rd press.
I swear I've tested all kinds of macros, but none of them seem to work.