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

*** 214,246 ****
  
      /** {@inheritDoc} */
      @Override protected double computeMinWidth(double height, double topInset, double rightInset, double bottomInset, double leftInset) {
          return leftInset
                  + label.minWidth(height)
!                 + snapSize(arrowButton.minWidth(height))
                  + rightInset;
      }
  
      /** {@inheritDoc} */
      @Override protected double computeMinHeight(double width, double topInset, double rightInset, double bottomInset, double leftInset) {
          return topInset
!                 + Math.max(label.minHeight(width), snapSize(arrowButton.minHeight(-1)))
                  + bottomInset;
      }
  
      /** {@inheritDoc} */
      @Override protected double computePrefWidth(double height, double topInset, double rightInset, double bottomInset, double leftInset) {
          return leftInset
                  + label.prefWidth(height)
!                 + snapSize(arrowButton.prefWidth(height))
                  + rightInset;
      }
  
      /** {@inheritDoc} */
      @Override protected double computePrefHeight(double width, double topInset, double rightInset, double bottomInset, double leftInset) {
          return topInset
!                 + Math.max(label.prefHeight(width), snapSize(arrowButton.prefHeight(-1)))
                  + bottomInset;
      }
  
      /** {@inheritDoc} */
      @Override protected double computeMaxWidth(double height, double topInset, double rightInset, double bottomInset, double leftInset) {
--- 214,246 ----
  
      /** {@inheritDoc} */
      @Override protected double computeMinWidth(double height, double topInset, double rightInset, double bottomInset, double leftInset) {
          return leftInset
                  + label.minWidth(height)
!                 + snapSizeX(arrowButton.minWidth(height))
                  + rightInset;
      }
  
      /** {@inheritDoc} */
      @Override protected double computeMinHeight(double width, double topInset, double rightInset, double bottomInset, double leftInset) {
          return topInset
!                 + Math.max(label.minHeight(width), snapSizeY(arrowButton.minHeight(-1)))
                  + bottomInset;
      }
  
      /** {@inheritDoc} */
      @Override protected double computePrefWidth(double height, double topInset, double rightInset, double bottomInset, double leftInset) {
          return leftInset
                  + label.prefWidth(height)
!                 + snapSizeX(arrowButton.prefWidth(height))
                  + rightInset;
      }
  
      /** {@inheritDoc} */
      @Override protected double computePrefHeight(double width, double topInset, double rightInset, double bottomInset, double leftInset) {
          return topInset
!                 + Math.max(label.prefHeight(width), snapSizeY(arrowButton.prefHeight(-1)))
                  + bottomInset;
      }
  
      /** {@inheritDoc} */
      @Override protected double computeMaxWidth(double height, double topInset, double rightInset, double bottomInset, double leftInset) {
*** 253,263 ****
      }
  
      /** {@inheritDoc} */
      @Override protected void layoutChildren(final double x, final double y,
                                              final double w, final double h) {
!         final double arrowButtonWidth = snapSize(arrowButton.prefWidth(-1));
          label.resizeRelocate(x, y, w - arrowButtonWidth, h);
          arrowButton.resizeRelocate(x + (w - arrowButtonWidth), y, arrowButtonWidth, h);
      }
  
  
--- 253,263 ----
      }
  
      /** {@inheritDoc} */
      @Override protected void layoutChildren(final double x, final double y,
                                              final double w, final double h) {
!         final double arrowButtonWidth = snapSizeX(arrowButton.prefWidth(-1));
          label.resizeRelocate(x, y, w - arrowButtonWidth, h);
          arrowButton.resizeRelocate(x + (w - arrowButtonWidth), y, arrowButtonWidth, h);
      }