src/macosx/classes/sun/lwawt/macosx/CPlatformView.java

@@ -190,11 +190,12 @@
         int x = event.getX();
         int y = getBounds().height - event.getY();
 
         if (event.getType() == CocoaConstants.NSScrollWheel) {
             responder.handleScrollEvent(x, y, event.getModifierFlags(),
-                                        event.getScrollDeltaX(), event.getScrollDeltaY());
+                                        event.getScrollDeltaX(), event.getScrollDeltaY(),
+                                        event.getScrollPhase());
         } else {
             responder.handleMouseEvent(event.getType(), event.getModifierFlags(), event.getButtonNumber(),
                                        event.getClickCount(), x, y, event.getAbsX(), event.getAbsY());
         }
     }