Quote Originally Posted by Nexfilius View Post
Just watch your timing & you should be fine.
I think you didn't understand what the OP was saying. What's happening is that you hit Aetherflow and the animation goes off like normal and the ability goes on cooldown, but no MP is restored and no Aetherflow stacks are given even though the ability is now on cooldown and you have to wait another minute to use it again.

In response to the OP, this has happened to me on occasion. I have no idea what causes it to happen or not, but thankfully it doesn't seem super common.