QQuickWindow::grabWindow renders too small on macOS retina

#include <QtGui/QGuiApplication>
#include <QtQuick/QQuickWindow>
#include <QtQuick/QQuickItem>
#include <QtQml/QQmlComponent>

int main(int argc, char** argv){
    QGuiApplication app{argc, argv};
    QQuickWindow window;
    window.resize({200, 200});

    QQmlEngine qmlEngine;
    QQmlComponent component{&qmlEngine};          
    component.setData(QByteArrayLiteral("import QtQuick\nRectangle{ color: 'red' }"), {});

    auto* item = qobject_cast<QQuickItem*>(component.create());
    item->setParent(window.contentItem());
    item->setParentItem(window.contentItem());
    item->setSize({200, 200});

    window.grabWindow().save("qt6-test.png");
}