When I am in a battle and try to use shadowfury, sometimes when I press the key the designation circle will click on and off. Other times it will behave correctly. Of course it misbehaves most often in those critical situations.
Is this a common problem or am I the only lucky one?
On a side note: it does not do this when I cast Rain of Fire or Blizzard (on mage) or Force of Nature (on druid).