QWidnow::setGeometry coordinate system does not relate to QScreen::virtualGeometry

The document of QWidnow::setGeometry said the coordinate system is realted to QScreen::virtualGeometry, however, it appears wrong if any screen has devive pixel ratio greater than 1.

It seems QScreen::geometry and QScreen::virtualGeometry all return QRect in device independent pixel (that is, divided by devicePixelRatio), but QWindow::setGeometry expect QRect in pixels.

If you try to set window to fullfill all screens (and screens have devicePixelRatio > 1)

widnow->setGeometry(screen->virtualGeometry());

You will notice it will not cover all screens, but if I do the calculation to convert virtualGeometry to pixel, it works fine.

static QRectF patchedVirtualGeometry(QWidnow* widnow)
{
    QRectF rect;
    for (auto sibling : window->screen()->virtualSiblings()) {
        auto box = sibling->geometry();
        box.setTopLeft(box.topLeft() * sibling->devicePixelRatio());
        box.setSize(box.size() * sibling->devicePixelRatio());
        rect |= box;
    }
    return rect;
}

// doc say so, but does not work
window->setGeometry(widnow->screen()->virtualGeometry()); 

// have to use this
window->setGeometry(patchedVirtualGeometry(window));