I've been using the mouseover in macros exclusively this past weekend while healing dungeons.

What i've noticed is that sometimes, even though i know i'm moused over my target because the little dot is next to their name and their pane is lit up, it will not heal them, it will instead heal me.

It was happening about once each pull this weekend so i thought it was my macro.
I took out the portion of the macro where if i'm not moused over something it will heal <me> just because i thought that might be bugging it, but even when I took that out of the macro it would still sometimes heal me rather than the tank i was moused over.

has anyone else had this issue?