Devour Magic can be cast on friendly/hostiles when nothing

[Lelol]

What is the bug?
Devour Magic can be cast on friendly/hostiles when there nothing is nothing to dispel.

What kind of bug is it? (Quest, Class, Spell, PvE)
Spell/Pet

How can you reproduce it?
use devour magic on yourself or an enemy when there is nothing to dispel

Please describe, in detail, what is suppose to occur when this bug happens:
When Devour magic is on auto-cast and there are no buffs to dispel on the target, the pet won't cast it. But the pet will use devour magic instantly when there is something to dispel on the target.

Please describe, in detail, what happens when it bugs up, and how it's malfunctioning:
it casts devour magic when there is nothing to dispel

Evidence providing proof of bug:
Proof: http://webmup.com/A7GSe/ (watch in full screen)

@ 0:07-0:11 watch his focus target gaining the shadow trance buff and the pet literally instantly(same frame) dispels the target, he did not dispel the target prior to that even though the spell was on auto-cast.

You can also read the text in the beginning of the video.

[Itslovelol]

Fixed.

(Don't know when live.)