--- a/widget/src/gtk2/nsWindow.cpp
+++ b/widget/src/gtk2/nsWindow.cpp
@@ -3911,20 +3911,16 @@ nsWindow::NativeCreate(nsIWidget        
     g_object_set_data(G_OBJECT(mDrawingarea->inner_window), "nsWindow",
                       this);
 
     g_object_set_data(G_OBJECT(mDrawingarea->clip_window), "mozdrawingarea",
                       mDrawingarea);
     g_object_set_data(G_OBJECT(mDrawingarea->inner_window), "mozdrawingarea",
                       mDrawingarea);
 
-    gdk_input_set_extension_events(mDrawingarea->inner_window,
-                                   gdk_window_get_events(mDrawingarea->inner_window),
-                                   GDK_EXTENSION_EVENTS_ALL);
-
     if (mContainer)
         g_object_set_data(G_OBJECT(mContainer), "nsWindow", this);
 
     if (mShell)
         g_object_set_data(G_OBJECT(mShell), "nsWindow", this);
 
     // attach listeners for events
     if (mShell) {