I ran into several weirdnesses all at about the same time, right as I got my "Pretty Fly Flycatcher" badge:
1. I opened a firefly jar, and it didn't display properly after filling (after the badge screen went away). First it showed as a tiny jar with no cork, and stayed that way even when I moved it around from slot to slot in my inventory. I filled another jar a moment or two later, and it worked normally.
Reloading did not clear up the problem: after the reload it was the right size and had a cork, but was dropped down halfway out of its slot, Significantly out of line with my other inventory objects.
2. I had a "Sky Cruisin'" buff going just before I got the badge, and it didn't go away for several minutes (I gather, from what I saw in Live Help, that several people were experiencing "stuck buffs" all at the same time). I did a meditate BEFORE I reloaded, and that was when the Sky 'Cruisin' buff cleared.
3. I had a "Silverytongued Charmer" buff when I opened the firefly jar that triggered the badge, and that didn't clear when the badge screen went away. It didn't clear when I did the "meditate." The Charmer buff didn't go away until I reloaded.
I hope that's clear enough. It was a lot of oddness all in one place. I still have the dropped down firefly jar. I'll try to notice when it goes back to normal, and add another report.