in my KDE4 MGA2 set-up the right-hand of my application windows have a half width navigation column making it difficult to grab the slider. What's more I cannot expand a window by dragging it to the right nor diagonally to the right-downward. I can do it by moving the whole window to the right and dragging the left side leftwards. Its not life-threatening but I would like to fix an otherwise perfect set-up.
I am not using desktop effects if that might be an issue.