Warrior - Intimidating shout

Tested today and i t does indeed work like i t should, but if you hit the target you some times remove the stun effect but leave the fear which makes the target run away.
Now we need to know:
1 Is this behaviour correct
2 Should the stun effect override the fear effect. (probably not as tooltip say cowering in fear)
3 make the triggered spell a precast which should cause the fear to be broken before the stun effect.

If somebody know sources like retail videos this would help

The creature you targeted should never run in fear, it should stay no matter what you do to it (except breaking the whole effect of course)

Thanks
i have an idea how to fix this.