Styling tab background in QTabWidget

[SGaist]

I have tested it on Windows and can confirm that it's not working on it (though it does on OS X)

Did you check the "bug report system":https://bugreports.qt-project.org/ to see if this is something known ? You might consider creating a bug report (put as much details as you can and a minimal compilable example so it can be reproduced)

[mbnoimi]

Oops it seems a real bug!!!

Thanks you for help I'll file a bug report about it.

[mbnoimi]

https://bugreports.qt-project.org/browse/QTBUG-33344