Version: (using KDE 4.2.2) Installed from: Ubuntu Packages In the panel configuration bar, the underline on the A in "Add Widget", and the L in "Lock Widgets", flicker when resizing the panel. By contrast, the underline on the other buttons e.g. M in "More Settings" does not flicker. The flickering occurs both when resizing the panel width, and when resizing the panel height.
Created attachment 33188 [details] Screenshot Here is a screenshot taken while furiously resizing the panel. Due to the flickering, you see no underline on the A in "Add Widget" etc.
can't reproduce in trunk (4.3)