Vaadin 23：MainView 中的 ScopeNotActiveException，扩展了 AppLayout View

Question

我有以下视图结构：

主页

@SpringComponent
@UIScope
@PageTitle("ExampleApp: Home Page")
@Route(value = Endpoint.UI.HOME_PAGE, layout = MainView.class)
public class HomePage extends VerticalLayout {
  //the rest is ommited
}

几个像这样的其他页面和 MainView：

@SpringComponent
@UIScope
@Push
@Viewport("width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes")
//@PWA - details ommited
@Theme(themeClass = Lumo.class, variant = Lumo.DARK)
@CssImport("./css/main_view.css")
public class MainView extends AppLayout implements BeforeEnterObserver, AppShellConfigurator {
   //implementation is ommited. 
}

在 Vaadin 14.8.1 应用程序中运行完美。但更新到 Vaadin 23.0.1 后，我得到：

2022-03-14T09:39:07.191902382Z org.springframework.beans.factory.support.ScopeNotActiveException: Error creating bean with name 'mainView': 

Scope 'vaadin-ui' is not active for the current thread; consider defining a scoped proxy for this bean if you intend to refer to it from a singleton;

 nested exception is java.lang.IllegalStateException: There is no UI available. The UI scope is not active

问题：如何从 MainView 访问 UI 范围或对象？