I queue as tank in Guildhest, was wonder why it was not instant, I saw I was queuing for something 8man, but I have no idea what.
I tried clear selection and queue again 4-5 times, was still same.

I tried after with my paladin, I didn't clear the last guildhest with him so I was guessing I had no change to queue for 8man thing while queing for quilhest, but it did same again.

I tried with the healer, and I got instant group.

http://img11.hostingpics.net/pics/69...2014163832.jpg

http://img11.hostingpics.net/pics/90...2014163845.jpg