Game Mechanics: Rooted mobs being treated like a mezed mob by pet

[guineapig]

I'm currently using my level 16 animation 9though I suspect they would all react the same way).

Whenever I get jumped by 2 mobs my pet usually taunts one off of me and then I pull one back a bit and root it. When my pet finishes off the first mob it just runs back to me completely ignoring the rooted mob that was beating on me ten seconds ago.

So basically the pet is acting like the mob is mezzed instead of rooted. In order for my pet to attack the rooted mob I have to walk back up to it and get hit AGAIN.

In contrast my pet has been breaking mez constantly and shouldn't be. I feel the animation reactions to these two spell lines are completely reversed.