QStyleOptionProgressBar does not draw text on Mac OS X

The text is not draw on Mac OS X, even textVisible is set to true.

I'm using QStyleOptionProgressBar in my software with QApplication::style()->drawControl(QStyle::CE_ProgressBar, &progressBarOption, painter), but text never appears whatever options I use.

I then tested the Torrent Example that also contains a custom drawing progress bar to realise it doesn't draw the text either (http://qt-project.org/doc/qt-5/qtnetwork-torrent-example.html).

On Windows, the text is draw properly. It might be broken since first version of Qt 5.