[Focus] if traverse focus in focus change listener, scene will have two focused controls

Run the code:

    @Override
    public void start(Stage stage) throws Exception {
        final TextField tf1 = new TextField("text1"), tf2 = new TextField("text2");
        tf1.focusedProperty().addListener(new ChangeListener<Boolean>() {
            @Override
            public void changed(ObservableValue<? extends Boolean> ov, Boolean lostFocus, Boolean getFocus) {
                if (lostFocus) {
                    tf1.requestFocus();
                }
            }
        });
        stage.setScene(new Scene(new VBox(tf1, tf2), 300, 300));
        stage.show();
    }

Initially, text field 1 has a focus. Press TAB. Both textFields will be focused (visually), but only the first one will receive input, press tab again, and the second control will start to receive keyboard input, but they both will still be visually focused.

Test case is from : http://stackoverflow.com/questions/14841622/javafx-after-dialog-two-textfields-gains-focus-instead-one

Situation can be observed here : http://www.fotos-hochladen.net/view/focus2cd7ioyvr3g.png