http://bugs.winehq.org/show_bug.cgi?id=11808
--- Comment #4 from Jörg Höhle hoehle@users.sourceforge.net 2009-01-19 08:46:01 --- Maybe this is related: in winecfg's audio tab, when there are e.g. MIDI output devices (e.g. run timitidy as an ALSA sequencer daemon) the list becomes so large that a horizontal scroll bar is added. Scrolling horizontally and then vertically makes individual black pixels appear to the left of the vertical scrollbar. Observed in wine-1.1.12