FULL PRODUCT VERSION :


A DESCRIPTION OF THE PROBLEM :
Running: Java(TM) SE Runtime Environment (build 1.8.0_71-b15)
 
Problem is simple. I have a menu, with a few menuItems on it. When the onShowing is triggered, I check a variable and set the menuItem style based on the result. What is happening is that the style changes the 1st time, but never again. In the test change mechanism.. I can change the text, I can change the disable, no problems, so I know that the logic is making it into the routine. I tried setting the style directly at first ( the commented out lines ) but that only worked the 1st time, never again. I tried to bind a property, but that also worked the first time as well.
 



STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
menu.setOnShowing(this);
 
....
 
private SimpleStringProperty pri= new SimpleStringProperty("-fx-text-fill: orange; -fx-font-weight: bold") ;
....
 
....
// even tried to bind a property .. that didn’t take as well
mi.styleProperty().bind(pri);
....
 
 
// if value is default, use one style, else use another...should be simple
if (tribute != null && tribute.equals(command.argument)) {
    log.warn("Tribute is equal: "+tribute.toString());
    //mi.setDisable(true);
   // mi.setStyle("-fx-text-fill: orange; -fx-font-weight: bold");
     mi.setText("(New) Value");
     pri.set("-fx-text-fill: orange; -fx-font-weight: bold");
    //mi.setDisable(false);
} else {
     mi.setText("(Def) Value");
    pri.set("-fx-text-fill: magenta; -fx-font-weight: normal");
    //mi.setStyle("-fx-text-fill: green; -fx-font-weight: normal");
}
 

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The color or font attribute should change depending on the value
ACTUAL -
The color or attribute changes ONE time, when the menu is first shown. It doesn't change after that.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
No known error messages

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
package menuitemproblem;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import javafx.application.Application;
import javafx.collections.ObservableList;
import javafx.event.Event;
import javafx.event.EventHandler;
import javafx.event.EventType;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.Menu;
import javafx.scene.control.MenuBar;
import javafx.scene.control.MenuItem;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

/**
 *
 * @author shipmodeller
 */
public class MenuItemProblem extends Application {

    Map<String, Boolean> Apple = new HashMap();
    Map<String, Boolean> Orange = new HashMap();

    @Override
    public void start(Stage primaryStage) {
        BorderPane root = new BorderPane();
        VBox topContainer = new VBox(); //Creates a container to hold all Menu Objects.
        MenuBar mainMenu = new MenuBar(); //Creates our main menu to hold our Sub-Menus.
        // Add our test menu here
        mainMenu.getMenus().add(this.getMenu());
        
        Label btn = new Label();
        btn.setText("Menu item should toggle color when selected");
        
        topContainer.getChildren().add(mainMenu);
        root.setTop(topContainer);
        root.setCenter(btn);

        Scene scene = new Scene(root, 300, 250);

        primaryStage.setTitle("Menu Item Font CSS issue");
        primaryStage.setScene(scene);
        primaryStage.show();
    }
    
    Menu getMenu(){
        Menu menu = new Menu("Tests");
        menu.getItems().add( new MenuItem("Tester"));
        menu.setOnShowing(new EventHandler<Event>() {

            @Override
            public void handle(Event event) {
                EventType et = event.getEventType();
                if (et.getName().equalsIgnoreCase("MENU_ON_SHOWING")) {
                    testAllCommonProperties((Menu) event.getSource());
                    return;
                }
                System.out.println("Hello World!");
            }
        });
        return menu;
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        launch(args);
    }

    boolean trigger = false;
    
    public void testAllCommonProperties(Menu menu) {
        ObservableList<MenuItem> obt = menu.getItems();
        Iterator<MenuItem> menuItemIterator = obt.iterator();
        while (menuItemIterator.hasNext()) {
            MenuItem mi = menuItemIterator.next();
            trigger = !trigger;
            //Boolean tribute = Apple.get(mi.getId());
            //if (tribute != null && tribute == Orange.get(mi.getId())) {
            if( !trigger ){
                //mi.setDisable(true);
                mi.setStyle("-fx-text-fill: orange; -fx-font-weight: bold");
                mi.setText("Boolean False");

            } else {
                mi.setStyle("-fx-text-fill: green; -fx-font-weight: normal");
                mi.setText("Boolean True");
            }

        }
    }
}

---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
I cannot find a work around