There are several LMs on my server who exploit this big whenever possible and use "targets target" to target my warg through their pet and still lay on a massive amount of DOTs during my 10s HPS. I have reported all of the LMs that have done this in hopes they fix it soon. This is plainly evident when you see the LM change target from you to pet that is on /follow. They can deny this as an exploit all day, but it's a failed game mechanic they knowingly take advantage of.
It has also happened where a hunters induction continues to target me after HPS and when this happens it usually pulls me out of stealth.
Not only this bug, but I have been repeatedly multi dazed/stunned during the 10s "immunity" as well as chain stunned for 12-16seconds after hitting a stun pot. This is not being "exploited" the same way the HPS problems have, but it's still frustrating to be dazed/stunned for the entire duration of a 10+ second fight.
~Anaxander R9 Warden, Baranthor R5 Hunter, Skartan R2 Guardian~ Elendilmir
~Karukh R10 Warg, Prisonshank R6 Reaver~ Elendilmir