QT-5.15: keyPressEvent doesn't trigger the Qt:Key_D case when "CTRL + SHIFT + d" is pressed

void foo::keyPressEvent(QKeyEvent *event)
{
    switch(event->key())
    {
        case Qt::Key_D:
        {
            if(event->modifiers() & Qt::KeyboardModifier::ControlModifier)
            {
                if(event->modifiers() & Qt::KeyboardModifier::ShiftModifier)
                {
                    doA();
                } else {
                    doB();
                }
                return;
            }
        }
        break;
        default: break;
    }
    QWidget::keyPressEvent(event);
}