Spells: Mage Earth pet 'Root' ability not returning Druid DOT Damage

[Esote]

Just a little bug I noticed duoing with my druid friend on my Mage today. The way I was duo'ing I would pull a mob, send in my earth pet to root/grab aggro and tank the mob then my druid friend would DOT and we just sit here medding until the mob dies. The problem we were encountering was that when the druid would allow the pet to root the mob, his dots would only do 2/3 of the damage they are supposed to do(as per the patch). Just to re-iterate, the mob is not moving when this is happening, he is rooted in place by my pets root ability and standing there perfectly still fighting my pet.

When I asked him to try using his own root ability and try dotting the mobs that way his full damaged returned(as intended). It just seems like the mage pet root ability isn't actually registering as rooting the mob so the game still thinks the mob is moving and therefore cuts off 1/3 of the DOT damage.

Esote
Esoterror