QTimer remainingTime() function returns bad values after 50 days

The remainingTime() function of QTimer always returns 0. According to the documentation, this means that the timer is overdue, but it is still running. This example prints "Remaining time: 0" on the console:

QTimer* timer = new QTimer ();
timer->setSingleShot (true);
timer->start (3000);
qDebug () << "Remaining time: " << timer->remainingTime ();