Version: (using KDE KDE 3.3.1) Installed from: Debian testing/unstable Packages menu transparency level change. I set up a menu transparency to 60% (approx.) Apply. Then Right click on desktop and see right-transparented menu. Then if I again press right mouse button, transparency level changed. If I left click on desktop to hide menu and right click again, then all ok.
*** This bug has been marked as a duplicate of 59911 ***