Do not call StackWindowFrontOf() when the AppActivity's window is already at the top

athena/content/app_activity.cc

Index: athena/content/app_activity.cc
diff --git a/athena/content/app_activity.cc b/athena/content/app_activity.cc
index 503e564aca1749465ab120ce4da127d4ae5dc424..f5c2866514729c708f0512f9e18d0f6347dbd08a 100644
--- a/athena/content/app_activity.cc
+++ b/athena/content/app_activity.cc
@@ -120,9 +120,11 @@ void AppActivity::Init() {
       // proxy the activation will change to the next (activatable) object and
       // thus we have to move the window in front at the end.
       Activity::Delete(app_proxy);
-      window_list_provider->StackWindowFrontOf(
-          GetWindow(),
-          window_list_provider->GetWindowList().back());
+      if (GetWindow() != window_list_provider->GetWindowList().back()) {
+        window_list_provider->StackWindowFrontOf(
+            GetWindow(),
+            window_list_provider->GetWindowList().back());
+      }
     } else {
       // The app window goes in front of the proxy window (we need to first
       // place the window before we can delete it).