FULL PRODUCT VERSION :
java version "1.8.0_60"
Java(TM) SE Runtime Environment (build 1.8.0_60-b27)
Java HotSpot(TM) 64-Bit Server VM (build 25.60-b23, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 6.1.7601]

A DESCRIPTION OF THE PROBLEM :
If a TabPane has no tabs, pressing the HOME key will throw the following exception (test program included in the Steps to Reproduce section):

Exception in thread "JavaFX Application Thread" java.lang.ArithmeticException: / by zero
at com.sun.javafx.scene.control.behavior.TabPaneBehavior.nextIndex(TabPaneBehavior.java:187)
at com.sun.javafx.scene.control.behavior.TabPaneBehavior.findValidTab(TabPaneBehavior.java:175)
at com.sun.javafx.scene.control.behavior.TabPaneBehavior.moveSelection(TabPaneBehavior.java:160)
at com.sun.javafx.scene.control.behavior.TabPaneBehavior.callAction(TabPaneBehavior.java:88)
at com.sun.javafx.scene.control.behavior.BehaviorBase.callActionForEvent(BehaviorBase.java:218)
at com.sun.javafx.scene.control.behavior.BehaviorBase.lambda$new$74(BehaviorBase.java:135)
at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Scene$KeyHandler.process(Scene.java:3964)
at javafx.scene.Scene$KeyHandler.access$1800(Scene.java:3910)
at javafx.scene.Scene.impl_processKeyEvent(Scene.java:2040)
at javafx.scene.Scene$ScenePeerListener.keyEvent(Scene.java:2501)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$KeyEventNotification.run(GlassViewEventHandler.java:197)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$KeyEventNotification.run(GlassViewEventHandler.java:147)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleKeyEvent$354(GlassViewEventHandler.java:228)
at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleKeyEvent(GlassViewEventHandler.java:227)
at com.sun.glass.ui.View.handleKeyEvent(View.java:546)
at com.sun.glass.ui.View.notifyKey(View.java:966)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$149(WinApplication.java:191)
at java.lang.Thread.run(Thread.java:745)




STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
To reproduce, run the following program...when the empty window appears, ensure it has the focus and press the HOME key. The exception is generated always.

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.TabPane;
import javafx.stage.Stage;

/**
 * Run this then press the HOME key and ... BOOM!
 */
public class TabPaneHomeTest extends Application {

  public static void main(String[] args) {
      launch(args);
  }

  @Override
  public void start(Stage stage) {
    final TabPane tabPane = new TabPane();
    stage.setScene(new Scene(tabPane));
    stage.show();
  }
  
}

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
I expected no exception.

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.TabPane;
import javafx.stage.Stage;

/**
 * Run this then press the HOME key and ... BOOM!
 */
public class TabPaneHomeTest extends Application {

  public static void main(String[] args) {
      launch(args);
  }

  @Override
  public void start(Stage stage) {
    final TabPane tabPane = new TabPane();
    stage.setScene(new Scene(tabPane));
    stage.show();
  }
  
}
---------- END SOURCE ----------