I'm referring to the mini dragon where you have to fire off the cannons to shoo away the last boss before it AoE's your group to death.

I'm not sure if the Typhoons are supposed to despawn or not, but they can get permanently lodged against one of the cannons, preventing it from being fired and guarenteeing a wipe. Somehow I doubt this was an intended mechanic. Swapping around where we held the boss eventually let us take him down just by sheer luck. (A typhoon still got stuck on a cannon, just not one we ended up needing)

My Bard told me she had no such problem with groups she had run it with before the patch, so maybe something got buggered up. As it stands now, there's seemingly no way to direct the projection of the typhoons, so it comes completely down to luck whether or not we survive the fight.