Yeah, its annoying, that you can "use" a second action immediatly, but the fairy doesn´t "do" it and the action is still on cooldown after that.
I can´t count how many ocds i blow out of the window because of it.

Either
- let us not use fairy actions as long as the fairy is doing another one or
- queue the fairy actions or
- at least don´t put the action on cooldown if it doesn´t get executed.