Windows: Japanese Menu accelerators letter missing in menubar

1.Go to "Control Panel / Ease of Access Center / Make the Keyboard easier to use", ensure "Underline keyboard shortcuts and access keys" is unchecked (standard setting)

2.Open "Menus Example" (widgets/mainwindows/menus) in Qt Creator,find function

void MainWindow::createMenus()
{
    ...
    fileMenu = menuBar()->addMenu(tr("&File"));
    ...
}

change it to something like

void MainWindow::createMenus()
{
    ...
    fileMenu = menuBar()->addMenu(tr("文件(&F)"));
    ...
}

3.Build & Run, then the letter "F" only show up when I press Alt.