Awesome, works just fine with FF24. I won't use higher versions because several of my favorite extensions won't work with them, though don't feel I can complain like others about a lack of updates since I myself just got around to using Windows 7. I'm sure you will get around to updating, and when you do, I have a suggestion.
It has to do with Win7 in fact, and is so obvious that perhaps it has been made before. MS made "taskbar on top" (of windows) no longer optional. Well, I prefer my taskbar at the top of my screen, thus when DS in mini mode has only one item its dropdown which doesn't drop down but UP (I think Windows can be blamed for this as well), it is hidden behind the taskbar.
In the future you should try to make the dropdown always drop DOWN. At any rate I know it will be possible to get you to do this long before MS fixes its now crippled taskbar.