It's not the usual ability failure. The rare is so high to the point it's useless.
Situation: right after break free, in the middle of fight or getting a lot of hits - it does fire when I'm not in combat
Syndrome: click it without weaving or other ability before or after. I can see the on screen button clicked, but no red wind poping up, no effect.
Here is the question: How can the on-screen button get "clicked" if an ability doesn't fire? This apply to all other abilities as well.