Version:            (using KDE KDE 3.5.2)
Installed from:    SuSE RPMs

I'm referring to that screenshot:

http://slaout.linux62.org/kde-wishs/bug_konqueror_overflow_scroll.png

The big white box with a lot of checkboxes and scrollbars is defined by the following CSS:

.scrollableList {
    height: 250px;
    width: 200px;
    overflow: scroll;
    overflow-x: visible;
    background: white;
    border: 2px inset gray;
}

When scrolling quickly, sometimes one checkbox is "pushed outside of the scrollbox area"!

On the screenshot, I scrolled down and the checkbox for user "dialout" is displayed outside of the area.

It goes away when scrolling more, and this bug isn't always triggered!