(Now with images!)
One little thing I've always wondered about while tanking is the enmity list in the party list. It's accurate and lovely, but if you sub-target to a new mob, the list pauses for a second and regenerates, but what it shows you is enmity on your "hard-target".
Is this glitched. If not, why does the list reset for a second when you sub-target?
Same scenario in both images. I'm targeting one target, "sub-targeting" another, and the enmity list it's showing me is for my "hard target". If I click to confirm the sub-target, then I get the appropriate enmity list, which is what I've always done.
Quoted for eloquence, because he described it much better than I could: