There are not icons, because load problem I think, but what can be it?

You can see under side of map does not exist.

I think that is not about leaflet. Because I could not take any problem on browser. I need help urgently.

Qt 6.10.0
Windows 11 26200.7462

My project uses QWebEngineView for video playback and QWebChannel to enable interaction between JS and QT.

QT6.8.3 on Windows

QWebEngine has been compiled with the -webengine-proprietary-codecs option and can now play videos properly.

However, when I inject JavaScript code through QWebChannel to achieve JS and QT interaction, the video playback fails. I have tried several methods, but none worked.

I suspect that QWebEngine video playback conflicts with users using QWebChannel.

Could anyone help me analyze what the problem might be?

My code is as follows:

//...
    webChannel = new QWebChannel(ui->webView);
    webChannel->registerObject("myQtObject",myQtObject);
//...
       ui->webView->page()->setWebChannel(webChannel);
//...
   QFile webChannelJsFile(":/res/qwebchannel.js");
    if (webChannelJsFile.open(QIODevice::ReadOnly)) {
     //  ...
        QByteArray webChannelJs = webChannelJsFile.readAll();
        webChannelJsFile.close();

        //If the following code is injected, the H5 video cannot play; however, if it is not injected, the window.myQtObject object cannot be initialized.
        webChannelJs.append(
            "\n"
            "new QWebChannel(qt.webChannelTransport, function(channel) {\n"
            "     window.myQtObject = channel.objects.myQtObject;\n"
            "});\n"
            );

        QWebEngineScript script;
        script.setName("qwebchannel.js");
        script.setInjectionPoint(QWebEngineScript::DocumentCreation); //Tried the DocumentReady parameter, but it still doesn't work.
        script.setRunsOnSubFrames(false);
        script.setWorldId(QWebEngineScript::MainWorld);  //Tried the ApplicationWorld and UserWorld parameters, but they both don't work.
        script.setSourceCode(webChannelJs);

        ui->webView->page()->scripts().insert(script);
    }

• Edge have it natively;
• Firefox has "Settings->Privacy&Security->Allow Windows single sign-on" option;
• Chrome has Microsoft Single Sign On extension available, but according to this article it now seems to have native support also.
  The question is - how to implement it with QtWebEngine? Any ideas where to look for?