diff -r 2717213c588a -r 9f66f99ee56f windowing/windowserver/nga/SERVER/openwfc/WINDOW.CPP
--- a/windowing/windowserver/nga/SERVER/openwfc/WINDOW.CPP	Tue Jun 22 15:21:29 2010 +0300
+++ b/windowing/windowserver/nga/SERVER/openwfc/WINDOW.CPP	Fri Sep 24 16:14:28 2010 +0300
@@ -674,6 +674,11 @@
 		aWindowTreeObserver.FlagChanged(*this, MWsWindowTreeObserver::ENonFading, ETrue); 
 		}
 	
+	if(IsTopClientWindow() && (iFlags&EFlagScreenDeviceInvalid) )
+		{
+		aWindowTreeObserver.FlagChanged(*this, MWsWindowTreeObserver::EScreenDeviceValid, EFalse);
+		}
+	
 	if(iAnimList)
 		iAnimList->SendState(aWindowTreeObserver);