Kivy: fix title and icon flash

window-titleicon.patch

diff --git a/kivy/app.py b/kivy/app.py
index db7e37c..f25c341 100644
--- a/kivy/app.py
+++ b/kivy/app.py
@@ -803,8 +803,6 @@ class App(EventDispatcher):
             if not isinstance(self.root, Widget):
                 Logger.critical('App.root must be an _instance_ of Widget')
                 raise Exception('Invalid instance in App.root')
-            from kivy.core.window import Window
-            Window.add_widget(self.root)
 
         # Check if the window is already created
         from kivy.base import EventLoop
@@ -816,6 +814,8 @@ class App(EventDispatcher):
             if icon:
                 window.set_icon(icon)
             self._install_settings_keys(window)
+            if self.root:
+                window.add_widget(self.root)
         else:
             Logger.critical("Application: No window is created."
                             " Terminating application run.")