Thank you for your reports.
We’ve been examining this issue for the last two weeks, and we will continue to look into it whenever we receive new detailed information on it.
We’ve not yet found anything to fix, but we may, and we appreciate details from you.
As always, the more you can tell us (character name and level and realm, time and date you were playing, names and levels of the other members of your party), the closer we can get to understanding it.