QPainter::drawStaticText() paints nothing with raster engine at point sizes > 50.

#include <QtGui>

int main(int argc, char **argv)
{
    QApplication app(argc, argv);

    QImage image(640, 200, QImage::Format_ARGB32);
    image.fill(Qt::white);

    {
        QPainter p(&image);

        QFont font;
        font.setPointSize(50);
        p.setFont(font);
        p.drawStaticText(0, 0, QStaticText(QString::fromLatin1("Point size %1").arg(font.pointSize())));

        font.setPointSize(51);
        p.setFont(font);
        p.drawStaticText(0, 100, QStaticText(QString::fromLatin1("Point size %1").arg(font.pointSize())));
    }

    QLabel label;
    label.setPixmap(QPixmap::fromImage(image));
    label.show();

    return app.exec();
}