positioning stacks off screen in Linux

[Warren Samples]

One of the commonly suggested methods of hiding stacks is setting their 
location to something that places them out of the view window. This is 
not working correctly here under openSUSE/KDE/KWin. A stack's location 
is constrained to the available viewport unless it has been previously 
dragged and placed so that some part of it past the screen edge. Once 
that is done, a stack can be positioned anywhere outside the viewport 
until it is completely within it and we return to our original problem. 
In order for any part of a stack to be positioned outside the viewport, 
some part of it must already appear beyond a screen edge.

This does not happen under Windows. Do users of other Linux 
distros/DEs/window managers find this same behavior?

Warren