[Reg 6.2.9 -> 6.5.2] QQuickWidget can crash when calling winId() in a native event filter (on Windows)

#include <windows.h>
#include <QAbstractNativeEventFilter>
#include <QApplication>
#include <QQuickWidget>
#include <QMainWindow>

class MyNativeEventFilter : public QAbstractNativeEventFilter
{
public:
    bool nativeEventFilter(const QByteArray&, void* message, qintptr*)
    {
        auto msg = (MSG*)message;
        QWidget* widget = QWidget::find(WId(msg->hwnd));
        if (widget)
            qDebug() << widget << widget->winId(); // WORKAROUND 1: Avoid calling winId() here
        return false;
    }
};

int main(int argc, char *argv[])
{
    //QQuickWindow::setGraphicsApi(QSGRendererInterface::OpenGL);

    QApplication app(argc, argv);
    app.installNativeEventFilter(new MyNativeEventFilter);

    QMainWindow mainWindow;
	
    // NOTE: mainWindow.winId() changes after each line below. Not sure if this is relevant.
    mainWindow.setWindowState(Qt::WindowMaximized); // WORKAROUND 2: Call this line AFTER the QQuickWidget is constructed
    mainWindow.setCentralWidget(new QQuickWidget);
    mainWindow.show();

    return app.exec();
}