Originally Posted by castille

That's what was doing it all night! I was trying to trace down what was causing my hidden raid frames to pop up randomly -just for my character-, all night, and I never made the connection until this morning.

Also, until I did a /console reloadui, when I had it unchecked the 'Hide Party Frames While In Raid' option, it was showing null target windows when I wasn't actively holding a target, as well as null focus, and focus target frames. Just a weird glitch I ran into. Once I reloaded, it all went back to normal.