Description of Problem:

Right clicking on a window item in the window list
pops up a menu. This menu always pops-up at the
same position: at the left side of the window item
in the window list.

I think it should popup exactly under the mouse
cursor. Why?
1) right click popup menu's usually have this
behaviour in other applications.
2) it's faster. You don't have to move the mouse
to the popup menu anymore.