anchor.diff:    GCanvasApp.created() : super.created();
   
   
  +
  +  void enteredView() {
  +    super.enteredView();
  +    attached();
  +  }
  +
     void attached() {
       super.attached();
   
  
positive.code: 
    void refresh() {
      syncCtrl.sync().then((_) {
        safariPrint("gCanvasApp.refresh");
        _loadAppState();
        safariPrint("gCanvasApp.refresh 2");
      });
  
    }
  
negative.code: import 'package:browser_detect/browser_detect.dart' as detect;
  
  import 'dart:js';
  
  
  @CustomTag("gcanvas-app")
  