Yep, had to kill it two times to get the achievement and the next day, two times to get the daily done.
What I noticed is that I was focusing the dogs when the kill didn't trigger and damaging the boss instead seemed to trigger it. Might be anecdotal
As I mentioned in other thread, here's what I found:
I found, by observing and trying, that one set of ogre tents is too far from boss fight. If you are looking to the throne, its the right ones. The boss fights are done mostly near the throne area. And the Ogres go back near the tents out of combat. And after bosskill they despawn, but not die (they are out of combat). And that probably bugs the fight. Every time when I was killing those lonely ogres (and other trash there) the boss counted. Tested on 4 diferent toons. Hope it helps, but no guaranties, it just a guess :-)
As I mentioned in other thread, here's what I found:
I found, by observing and trying, that one set of ogre tents is too far from boss fight. If you are looking to the throne, its the right ones. The boss fights are done mostly near the throne area. And the Ogres go back near the tents out of combat. And after bosskill they despawn, but not die (they are out of combat). And that probably bugs the fight. Every time when I was killing those lonely ogres (and other trash there) the boss counted. Tested on 4 diferent toons. Hope it helps, but no guaranties, it just a guess :-)