modules/controls/src/main/java/javafx/scene/control/skin/MenuButtonSkinBase.java

*** 23,32 ****
--- 23,33 ----
   * questions.
   */
  
  package javafx.scene.control.skin;
  
+ import com.sun.javafx.scene.NodeHelper;
  import com.sun.javafx.scene.control.ContextMenuContent;
  import com.sun.javafx.scene.control.ControlAcceleratorSupport;
  import com.sun.javafx.scene.control.LabeledImpl;
  import com.sun.javafx.scene.control.skin.Utils;
  import javafx.application.Platform;
*** 184,194 ****
                  // Make sure button is in sync.
                  getSkinnable().hide();
              }
  
              if (popup.isShowing()) {
!                 Utils.addMnemonics(popup, getSkinnable().getScene(), getSkinnable().impl_isShowMnemonics());
              } else {
                  // we wrap this in a runLater so that mnemonics are not removed
                  // before all key events are fired (because KEY_PRESSED might have
                  // been used to hide the menu, but KEY_TYPED and KEY_RELEASED
                  // events are still to be fired, and shouldn't miss out on going
--- 185,195 ----
                  // Make sure button is in sync.
                  getSkinnable().hide();
              }
  
              if (popup.isShowing()) {
!                 Utils.addMnemonics(popup, getSkinnable().getScene(), NodeHelper.isShowMnemonics(getSkinnable()));
              } else {
                  // we wrap this in a runLater so that mnemonics are not removed
                  // before all key events are fired (because KEY_PRESSED might have
                  // been used to hide the menu, but KEY_TYPED and KEY_RELEASED
                  // events are still to be fired, and shouldn't miss out on going