Version: (using KDE KDE 3.4.2) Installed from: SuSE RPMs Reproducibility: sometimes Step to reproduce: 1. In thread pane, hover the mouse over an article whose subject is too long to fit in the display. 2. KNode pops up a tooltip with the full subject. 3. Move the mouse elsewhere. Expected behaviour: 4. Tooltip should disappear and whatever was previously visible under it should be restored. Observed behaviour: 5. Tooltip disappears, but the image below is not repainted. User is left with a blank rectangle. See attached screenshot for an example.
Created attachment 12411 [details] Screenshot demonstrating bug. The blank rectangle left by the tooltip is indicated by the red ellipse.
Probably you start your x-server with backing store support on. That can lead to errors in the reconstitution of the area below the popup, mostly text and transparent Pixmaps. Try to create a .xserverrc file in your home directory with a line like this: exec /usr/X11R6/bin/X :0 -bs And adjust further options after your needs, "X --help" will help you.
This is a bug in the X.org server; see http://bugs.freedesktop.org/show_bug.cgi?id=25637