It's a bit broken:
1) it is not accessible with tab (i.e. with keyboard)
2) it disappears after one click (i.e. click on an option and it fade out)
It may be simpler to just show it "permanently" and not as a dropdown but as an in-line element under the search box.
Or we could just have the old style with it all nice and shiny on its own page. Lotsa lovely space there. :D
That would be too easy. :P
Fixed now better handling the show/hide.