src/java.desktop/windows/classes/sun/awt/windows/WScrollPanePeer.java

*** 105,116 ****
--- 105,118 ----
       * information from the java-level is passed down and used.
       */
      @Override
      public void childResized(int width, int height) {
          ScrollPane sp = (ScrollPane)target;
+         if(sp.getScrollbarDisplayPolicy() != ScrollPane.SCROLLBARS_NEVER) {
              Dimension vs = sp.getSize();
              setSpans(vs.width, vs.height, width, height);
+         }
          setInsets();
      }
  
      synchronized native void setSpans(int viewWidth, int viewHeight,
                                        int childWidth, int childHeight);