IJavascriptCallback 挂起应用程序 CefSharp

如何解决IJavascriptCallback 挂起应用程序 CefSharp

当我以如下方式执行回调时，程序完全冻结：

[JavascriptIgnore]
private async Task<bool> ExecuteCallback(IJavascriptCallback callback,params object[] parms)
        {
            if (callback != null && callback.CanExecute && !callback.IsDisposed)
            {
                JavascriptResponse response = await callback.ExecuteAsync(parms);
                return response.Success && bool.TryParse(response.Result?.ToString(),out bool result) && result;
            }
                return false;
        }

如何创建浏览器：

        CefSettings cefSettings = new CefSettings()
        {
            CachePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),"CefSharp\\Cache")
        };
        cefSettings.CefCommandLineArgs.Add("enable-media-stream");
        cefSettings.CefCommandLineArgs.Add("use-fake-ui-for-media-stream");
        cefSettings.CefCommandLineArgs.Add("enable-usermedia-screen-capturing");
        if (!Cef.IsInitialized)
        {
           Cef.Initialize(cefSettings,performDependencyCheck: true,browserProcessHandler: null);
        }

        Browser = new HandBrowser("dummy:")
        {
            JsWorker = new JsWorker(),};
        Browser.Address = "www.google.ru";
        Browser.JavascriptObjectRepository.Settings.LegacyBindingEnabled = true;
        Browser.JavascriptObjectRepository.NameConverter = null;
        Browser.JavascriptObjectRepository.Register("worker",Browser.JsWorker,isAsync: false);

请告诉我为什么会这样，我已经花了很多时间寻找问题。