Also was talked about in
Buff Right click error
scroll down to about posts 5 and 6, and there is a work around, using /cancelaura 'buff name'
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Have fun, and remember WOW is just a game, for us to enjoy, and all the Addons we use.... remember the programmer is a human too, and MOST times, is doing this as a hobby, so give them time to have their life, so they can fix the addons, so we can have our WOW life.