I just installed KDE and put the taskbar vertically on one of my 2 monitors. The problem is that maximized windows don't recognize the taskbar space. The maximized windows go under the taskbar.

It works fine if I use only one monitor or set the 2nd monitor as a clone. It then works as expected, that is when I maximize a window it goes up to the edge of the taskbar. How can I make it work like this using dual monitors?