How to get QMenu to react to text size changes in high DPI modes

Menu and menu text automatically resizes when the window is moved from a 96 dpi screen to a 192 dpi screen. I naively thought that Qt would automatically resize the menu when the menu text resizes, but I am obviously wrong here.

• How can I get the QMenuBar and QMenu to resize when the text is resized? (Specifically when a window is dragged onto a 192 dpi screen)

The text resizes only when the window is moved to a 192 dpi screen. If the window is initially displayed on screen 192, it will draw 96dpi smaller text.

2. How do I ensure that the text is sized correctly when the main window is opened on a 192 dpi screen?

I tested the game with the QT_DEVICE_PIXEL_RATIO env variable, but that doesn't solve anything. I can make the menus grow larger by setting the value to 2, but I need them to resize depending on the screen I'm using. And the application must be Per-Monitor DPI Aware for Windows, so leaving it at the automatic scale of the window manager is not an option.

I also tested this with the Fusion style to rule out that it is related to the native Windows style.

Trivial test case:

#include <QApplication>
#include <QMainWindow>
#include <QMenuBar>
#include <QStyle>
//#include <QStyleFactory>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

    //a.setStyle((QStyleFactory::create(("Fusion"))));

    QMainWindow w;

    QMenuBar *menuBar = w.menuBar();

    QMenu *menuFile = menuBar->addMenu("File");
    QMenu *menuEdit = menuBar->addMenu("Edit");
    QMenu *menuCompany = menuBar->addMenu("&Company");
    QMenu *menuArrange = menuBar->addMenu("Arrange");

    // file menu
    menuFile->addAction(a.style()->standardIcon(QStyle::SP_DirOpenIcon), "Open", nullptr, nullptr, QKeySequence::Open);
    menuFile->addAction(a.style()->standardIcon(QStyle::SP_DriveFDIcon), "Save", nullptr, nullptr, QKeySequence::Save);
    QAction* actionQuit = menuFile->addAction("Quit");
    QObject::connect(actionQuit, &QAction::triggered, &w, &QMainWindow::close);
    // edit menu
    menuEdit->addAction(a.style()->standardIcon(QStyle::SP_ArrowLeft), "Undo", nullptr, nullptr, QKeySequence::Undo);
    menuEdit->addAction(a.style()->standardIcon(QStyle::SP_ArrowRight), "Redo", nullptr, nullptr, QKeySequence::Redo);
    // company menu
    menuCompany->addAction(a.style()->standardIcon(QStyle::SP_DriveNetIcon), "DB Connect", nullptr, nullptr, QKeySequence(Qt::SHIFT + Qt::Key_Insert));

    w.setCentralWidget(new QWidget);

    w.show();

    return a.exec();
}