Fullscreen stage is not working properly in JavaFX 2.1?

Question

The first stage that I load it always open properly as fullscreen.

stage.setFullScreen(true);
stage.setScene(login_scene); 

But when I change to another FXML the applications stays fullscreen (no top toolbar.. ), but the actual view content gets resized on the prefWidth/prefHeight of the root AnchorPane from FXML (I can see the desktop in my bottom right corner :|), and I want it to be dynamic to my screen resolution.

Thanks.

@Later Edit:

So on the start method of my main Class I load a Scene (created from an FXML doc) and set it to the Stage (the start method param). I save this stage for later use.

When I press a button with the same stage I save previously I change the scene to another FXML document

@Screenshots:

http://tinypic.com/r/2079nqb/6 - 1st scene works normally - code from start override method of the main class

 @Override
  public void start(Stage stage) throws Exception {
    Parent root = FXMLLoader.load(getClass().getResource("Sample.fxml"));

    stage.setScene(new Scene(root));
    stage.setFullScreen(true);
    stage.show();
    currentStage = stage;
  }

http://tinypic.com/r/szfmgz/6 - after reloading the second scene - the code below from sample controller class

 @FXML
  private void handleButtonAction(ActionEvent event) throws IOException {
    Parent root = FXMLLoader.load(getClass().getResource("Sample.fxml"));
    JavaFXApplication12.currentStage.setScene(new Scene(root));
  }

Answer 1

I have no idea about the real cause but here are 2 quick workarounds.
In the handleButtonAction method:
1) Don't create new scene just replace its content

  @FXML
  private void handleButtonAction(ActionEvent event) throws IOException {
    Parent root = FXMLLoader.load(getClass().getResource("Sample.fxml"));
    JavaFXApplication12.currentStage.getScene().setRoot(root);
  }

2) If you really nead to create new scene then toggle fullscreen

  @FXML
  private void handleButtonAction(ActionEvent event) throws IOException {
    Parent root = FXMLLoader.load(getClass().getResource("Sample.fxml"));
    JavaFXApplication12.currentStage.setScene(new Scene(root));
    Platform.runLater(new Runnable() {
        @Override
        public void run() {
           JavaFXApplication12.currentStage.setFullScreen(false);
           JavaFXApplication12.currentStage.setFullScreen(true);
       }
    });
  }