CLONE -QMenu exec()'ed on QSystemTrayIcon::Trigger won't disappear (Windows-only)

////////////////////////////////////////////////
void Window::iconActivated(QSystemTrayIcon::ActivationReason reason)
{
    switch (reason)
    {
        case QSystemTrayIcon::Trigger:
        {
            QMenu menu;
            menu.addAction("Test");
            menu.exec(QCursor::pos());
        }
            break;
        case QSystemTrayIcon::DoubleClick:
            iconComboBox->setCurrentIndex((iconComboBox->currentIndex() + 1)
                                          % iconComboBox->count());
            break;
        case QSystemTrayIcon::MiddleClick:
            showMessage();
            break;
        default:
            ;
    }
}
////////////////////////////////////////////////