Version: 3.5 (using KDE 4.3.2) OS: Linux Installed from: Archlinux Packages If one clicks at the kmix volume control in the systems tray, it appears. If clicked again, it disappears. All fine. But if one hovers over it and changes the volume via the mouse wheel, clicking it and trying to make it disappear by clicking it again or clicking at some free space doesn't work. Workaround: A right mouse button click to makes it disappear (thx to #kde)
I can confirm this on Archlinux x86_64 and KDE 4.3.2
This is a bug with the new SystemTray icon implementation: bug 199004 and bug 203363. Thanks *** This bug has been marked as a duplicate of bug 199004 ***
Thx for spotting this duplication!