In AGUF 36399.1001, I'm noticing a strange bug where the default Blizzard target frame would appear and be stuck to a single character in my party or raid. This only seems to happen when I do the following:
1. Create a party.
2. Target a party member.
3. Cross a zone-line (eg. enter an arena, go through a mage portal, etc.)
4. You should have a target frame stuck on the person you had targeted in your party prior to zoning.
This doesn't happen if you detarget whatever you had targeted before you zone.
/reloadui also fixes this bug.