- Set `LeftClickNavigatesByPage=true` in the `[KDE]` section of ~/.config/kdeglobals
- Click in the scroll trough in a Qt/KDE app
- See that the scroll handle position jumps right there
- Set `LeftClickNavigatesByPage=false` or remove it from kdeglobals
- Click in the scroll trough in a Qt/KDE app
- See that the scroll handle moves up or down by one page height