i use the KWin "show windows" plugin to get an idea of open windows (since the taskswitcher doesnt work for me)
in overview the icons and labels of the windows are misplaced. seems that they get placed relative to my monitor instead of the focused area. the labels and icons should be zoomed as well. seems that they are drawn on an different layer (or other z axes) what is not respected by the zoom plugin.
i provide screenshots here
without zoom to see how it should look like