Have you read the first (sticky) post in this forum to see how you should report a bug?
http://forum.square-enix.com/ffxiv/t...EAD-THIS-FIRST)

And no, I personally have never experienced the bug you mentioned, and neither have my friends or the FC members I have run this fight with, unless our connection is messed up. Your connection may hiccup from time to time which means you may have thought you ran out of Eruptions, when you did not - happened to a few of my friends when their housemates decided to start their torrents and they suddenly got the "dc" icon for a few secs, before finally returned to the game. They did not think that they lagged, but the fact was that their character was just standing there for a few secs, eating plumes / eruptions / slides.