QTabWidget: When moving the left position of the tabbar in a stylesheet then it will cause the scrollbuttons to overlap with the right corner widget

#include <QtGui>

int main(int argc, char **argv)
{
    QApplication a(argc, argv);
    QTabWidget tw;
    for (int i=0;i<15;i++)
        tw.addTab(new QLabel(QString("%1").arg(i)), QString("%1").arg(i));
    tw.setCornerWidget(new QLabel("Corner"));
    tw.setStyleSheet(
        "QTabWidget::tab-bar { left: 5px;  } "
        );
    tw.show();
    return a.exec();
}