AI bug or Event?

[zantocon]

Last night we were doing Ralkor's Crystals, a first for me. During the event I had a member of my group very near death so I through out ancestral intervention rank 2 and got a nice crit, somewhere around 29k. Then my spell gems didn't refresh, I tried clicking my epic to see if a clicky would make them come back, then used my lev shield, regen belt. Deleted all my gems and rememmed them. Eventually I had to camp and come back. Luckily it was at the end of the script and the 12k hitter was down and no one needed my heals. So i just waited till loot was taken care of and then camped. My question is this, has anyone had this happen before with this script? or with ancestral intervention? I've used AI a lot and have never seen it happen but with weekly patches etc, a rare new bug wouldnt' suprise me. I'm thinking a script bug is more likely and that one could be devestating to a group if a healer loses all ability to heal early on.

One of the enchanters said that her spell gems greyed out early on but came back "eventually".

[Yesak]

It's a bug. I think it can happen with any direct heal spell, but I know it happens with AI specifically. It is always a 29k crit too as far as i can tell.