So I've been farming and camping the new Mount Rare Spawns. Successfully found and killed Nakk and tonight I thought I'd stick around Nagrand and wait for Luk'hok.
I spend most of my evening waiting. (It's now 2:39am and I've been here since well around 6pm) I start questing and have cleared most of the quests in the area when general chat blows up about him spawning and people asking for invites. I get invited by my friend, one of the first to spot him. He says he's next to him, I start riding when I stand where they are showing in my mini map and I can't see neither him, nor the spawn or any of the other people that was killing him. I decide to leave the group as I thought it was something to do with phasing but nothing changed. Keep in mind, we are both on the same server.
Trying to understand what happened there as most of the people that could see him I had been talking to and saw in the area throughout the evening but can't make out what might have happened to not see them or the mob. Would be nice to know to prevent any weird phasing (if it was phasing) issues in the future!