--- a/jdk/src/java.desktop/macosx/classes/sun/lwawt/LWWindowPeer.java	Fri Mar 27 16:13:45 2015 -0500
+++ b/jdk/src/java.desktop/macosx/classes/sun/lwawt/LWWindowPeer.java	Mon Mar 30 17:46:58 2015 +0300
@@ -1296,6 +1296,12 @@
         }
 
         KeyboardFocusManagerPeer kfmPeer = LWKeyboardFocusManagerPeer.getInstance();
+
+        if (!becomesFocused && kfmPeer.getCurrentFocusedWindow() != getTarget()) {
+            // late window focus lost event - ingoring
+            return;
+        }
+
         kfmPeer.setCurrentFocusedWindow(becomesFocused ? getTarget() : null);
 
         int eventID = becomesFocused ? WindowEvent.WINDOW_GAINED_FOCUS : WindowEvent.WINDOW_LOST_FOCUS;