Game Mechanics: Warrior Discipline Problems

[Kazoruuk]

If you are stunned in any way, be it a mob bashing you, or a stun spell, and you attempt to use a discipline, it will not fire off and your cooldown will be used up. This generally happens when I pull multiple mobs and attempt to use evasive/defensive disc. Probably doesn't happen to ogres as much, but I am a barbarian so I've been experiencing it quite a lot, and it can be rather frustrating. Is this how it was on live?