[Development] problem toolbar on mac osx 10.9.2

[Alessio Mochi]

Hello,
I have a mainwindow application with a QGLWidget component and a left toolbar.
When I try to show hide toolbar button the behavior on window 7 is different from that in mac osx 10.9.2.
Hide toolbar button in windows 7 overlap the qglwidget component in the right way while on mac osx does not overlap.
I attach some screenshot to explain better and the complete c++ source code.

Window 7 screen shot (ok)screenW7.png

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Mac osx 10.9.2 (issue)mac.png

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Full source code about this application:https://drive.google.com/file/d/0BzoYtkGko_O3dzh6VFpzRkFpSTA/view?usp=sharing
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