[PyQt] Last Item of Menu Tool bars is invisible on OS X but not Windows or Linux

[John Wheez]

Hi all,

I have some menu tool bars in my GUI and I find that the last item on  
the menu is always invisible when the program is run on OS X but  
everything is fine when the program is run on Windows XP and Linux.

I made the GUI with Qt Designer.

Has anyone run in to this issue before? Any tips are welcome.

Thanks.