Problems with WindowMaker

I have a slight problem when starting Blender as a window (with the “blender -w” command) in WindowMaker on Linux. The lower part of the window extends past my screen so each time I start Blender I have to move and resize the window befor I start working, maybe not a major problem but still kind of anoying. This only happens when i open blender as a window, when open in Blender fullscreen it opens fullscreen and doesnt extend to far, neither doest it extend to far when opening as a window in KDE or Xfce.
Not really a big problem but kind of anoying so If anyone would have any ideas I would be thankfull!