http://bugs.winehq.org/show_bug.cgi?id=16716
--- Comment #2 from Rpnpif rpnpif@free.fr 2009-07-09 09:56:13 --- This issue is still in wine 1.1.25.
I must say that the defect appears only when I maximized the FlowCode window clicking on the maximize icon, not when I resized the window dragging an edge.