Elemental Bonds: Desire

In this Thrall/Aggra quest chain each emotion quest gives you a bar which you must fill primarily by attacking and killing elementals that hold Thrall in...well...thrall. The larger elementals with more HP count for more than the smaller, easier to kill elementals. This quest, Desire, though has 2 parts. Not only must you kill the elementals imprisoning and attacking Thrall but you must save Aggra as well. Once you have filled the bar for Thrall and completed his half of the quest you must rescue Agga who's been encased in a bubble and is being drawn into the vortex to drown. Finding Aggra isn't easy, however. I lost track of her after freeing Thrall and despite the warnings on my screen could not locate her so I created a simple targeting macro, /target Aggra, and put it on my hot bar.

Because I'd already lost Aggra I had to log out and then log in again. I got on my Abyssal Seahorse and hit my macro button highlighting Aggra and making her easy to find. Once I reached Aggra I had to dismount. My cursor turned into a grasping hand and after chasing her bubble for a bit I finally grabbed Aggra...so to speak. She then releases and swims back to the point from which she was originally shouting encouragements to Thrall. What follows is some dialogue with a friendly water elemental before we leave for Deepholm and the next stage of the quest chain.

Don't dive into the vortex like I originally did. If you do, there's an NPC in there that you can speak with to take you back to the top of Abyssal Breach.

Kill the Tides of Longing elementals (NOT the elite Vortex of Longing elementals) until your bar is full.

Once your bar is full, you'll need to target Aggra. I did a "/tar Aggra" and icon marked her to make her easier to find. I then chased her and freed her from her bubble (you'll see a hand icon that will allow you to grasp her). She'll then swim back to the location where you turn in the quest to her.

This quest is very broken for Demonology 'locks right at the moment.

See post here: http://us.battle.net/wow/en/forum/topic/6520712066?page=1#2

Confirmed myself that switching out of Demo spec worked. The minute I re-accepted the quest from Aggra as Affliction, the script started and progressed as intended, whereas while Demo, the script never started and getting to 100% of kills did nothing.

If after you drop the quest, you have to leave to train a new spec, you're on your own to get back.

You can easily fly to the island above SilverTide Hollow from the farthest West point of Dun Morough via flying mount if you've never opened up Vash'jir (I hadn't.) With the new B.net mount sharing, I had the Abyssal Seahorse from another alt, so I simply mounted it, put on water breathing, and swam the rest of the way to the Abyssal Maw where I talked to Aggra in order pick up the quest once more.

Very much a PITA for a workaround, but at least you won't be stuck. :) Good Luck!

Edit: the next quest in the chain, Elemental Bonds: Patience, was also broken as Demo. Just stay Aff or Destro for the rest of the chain and save yourself some grief.