I realize it probably isn't high on the list of things to fix, but for hunters it's a problem. I was hoping it would be isolated to just Heroic Sha, but it isnt.
Actually, it is high on the list. Hearing that it occurs even in the absence of UI mods is helpful -- there's been a lot of conflicting information about this particular bug, with various UI mods cited as possible causes, but nothing concrete. We're investigating it.