#1 - Feb. 23, 2011, 10:01 a.m.
When you forced to change your form (for example by attacking while in Human form) bug does not appear and you still have access to all your abilities. When you change your form from Worgen into a Human everything is fine also..
I don't think that is intended to work that way, because changing forms is purely cosmetic and doesn't affect Global Cooldown timer. So it should not affect the use of your combat abilities.