The default spell alert for "Arcane Missiles!" currently has a bug when used with 4 piece T16 armor.
Many mages have "noticed" that the 4 piece (http://www.wowhead.com/spell=145257) "Arcane Missiles has a 15% chance to not consume Arcane Missiles!.", doesn't seem to proc when you have 2 stacks of "Arcane Missiles!". This isn't true; what's happening is that the buff isn't consumed, but the right side "pink bar" spell alert graphic disappears for some reason. I've attached an image with the spell alert graphic and buff stacks circled in red, to show the issue.
I've reported this bug on the forums (http://us.battle.net/wow/en/forum/topic/12880047941), but I don't know any workaround or fix for it at the moment. Here's my weakauras2 string to imitate the behavior of the default spell alert, without the 4T16 bug:
Code: Select all
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