src/java.desktop/macosx/classes/com/apple/laf/AquaSpinnerUI.java

*** 554,563 ****
--- 554,564 ----
              }
  
              if (bottom != null) {
                  fBottomModel = bottom.getModel();
              }
+             setFocusable(false);
          }
  
          @Override
          public void paint(final Graphics g) {
              if (spinner.isOpaque()) {