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

*** 23,32 ****
--- 23,33 ----
   * questions.
   */
  
  package javafx.scene.control.skin;
  
+ import com.sun.javafx.scene.NodeHelper;
  import com.sun.javafx.scene.control.behavior.BehaviorBase;
  import com.sun.javafx.scene.control.skin.Utils;
  import javafx.scene.Node;
  import javafx.scene.Scene;
  import javafx.scene.control.Button;
*** 61,77 ****
       * Listeners                                                               *
       *                                                                         *
       **************************************************************************/
  
      Runnable defaultButtonRunnable = () -> {
!         if (getSkinnable().getScene() != null && getSkinnable().impl_isTreeVisible() && !getSkinnable().isDisabled()) {
              getSkinnable().fire();
          }
      };
  
      Runnable cancelButtonRunnable = () -> {
!         if (getSkinnable().getScene() != null && getSkinnable().impl_isTreeVisible() && !getSkinnable().isDisabled()) {
              getSkinnable().fire();
          }
      };
  
  
--- 62,78 ----
       * Listeners                                                               *
       *                                                                         *
       **************************************************************************/
  
      Runnable defaultButtonRunnable = () -> {
!         if (getSkinnable().getScene() != null && NodeHelper.isTreeVisible(getSkinnable()) && !getSkinnable().isDisabled()) {
              getSkinnable().fire();
          }
      };
  
      Runnable cancelButtonRunnable = () -> {
!         if (getSkinnable().getScene() != null && NodeHelper.isTreeVisible(getSkinnable()) && !getSkinnable().isDisabled()) {
              getSkinnable().fire();
          }
      };