A few of my guildies hit 90 pretty quickly in MoP and have been farming the 5 man heroics for gear ever since, and we've come across some amusing pet issues and LoS issues, some stand out so much that we can't believe they were not fixed in the beta.
Has anyone else come across amusing pet/hunter related bugs.
Anyways two of the bugs that come to the top of my head are
1. Gate of the Setting Sun. The first pulls on the terrace are bugged all to crap, even though the mobs are standing in front of you and you can target them you and your pet have LoS issues with them. Also off and on all the way through on fights on the wall your pet seems to have pathing issues when attacking.
2. There is also one of the dungeons that both on Reg mode and heroic when you are descending the round about stairs, and after killing a few mobs, your pet takes off running right past mobs and seems to be heading towards the boss area, without you attacking or targeting anything.
Those really were not meant to be complaints, just LoL moments, as I've found most of MoP content to be fresh and enjoyable so far.