I've noticed three strange bugs that may all be due to the same thing since they all involving the Trout icon in the MiniBar.
When the main window is open and a song is playing and I hover over the Trout icon in the MiniBar, the EQ visualizer thingy stops responding.
Also, the hover tooltip thingy will appear, showing what song is currently playing. And if I move my mouse off the MiniBar somewhere random, the tooltip will appear once again at the new location.
Additionally, I often double click the Trout Icon in the MiniBar to bring up the main window, and it appears that any time I do that, the path to a dll file gets copied to my clipboard. On my computer, it's this:
This is using build 24 but has been happening at least since build 21. Windows 7 x64.
Here are some shots of the tooltip problem: