Okay, I found a bug. I can't begin to express how annoying this was.
First off, it's a conflict with another addon. QuestHistory. http://www-en.curse-gaming.com/downloads/details/7388/ However, running just the latest version of GuildMap and QuestHistory doesn't cause the bug. But, running the latest version of GuildMap, QuestHistory, and the latest version of external ace libraries (although I don't know which library is causing it because I don't have the patience to find out), DOES cause the bug. So all three have to be on for the bug to happen; 1) QH, 2) GM, 3) ace libraries.
That said, the bug is that when there's a dropdown list, it instantly disappears. For instance, when I right click my portrait, or right click my pet's portrait (so I can abandon it), it instantly disappears.
However, it only occurs inside an instance! Wailing Caverns. (Might occur in other instances, probably does.) The moment I step outside, everything works fine. When I enter, it doesn't.
And again, this is only when I have GuildMap, the ace libraries, AND Quest History running. Pick any two of those and it works fine. All three, and it doesn't.
This took me like an hour and 15 minutes to track down which addons were causing it. =P
For now, I'm going to disable GuildMap (since I'm not in a guild anyway), but I'd appreciate a fix, if you'd be so kind.
When will this get rotating minimap support?
It's making me crazy to have to point north or look at the main map to find someone.
Nearly every hunter in our guild uses rotating minimap for easier tracking, I would have thought this would have been considered in this addon.