diff --git a/gdk/gdk-private.c b/gdk/gdk-private.c
index 0a7438162c..463619bdad 100644
--- a/gdk/gdk-private.c
+++ b/gdk/gdk-private.c
@@ -24,6 +24,7 @@ gdk__private__ (void)
     gdk_profiler_start,
     gdk_profiler_stop,
     gdk_window_titlebar_gesture,
+    gdk_window_is_impl_offscreen,
   };
 
   return &table;
diff --git a/gdk/gdk-private.h b/gdk/gdk-private.h
index e962fc9751..687ba061e9 100644
--- a/gdk/gdk-private.h
+++ b/gdk/gdk-private.h
@@ -71,6 +71,8 @@ typedef struct {
 
   gboolean (* gdk_window_titlebar_gesture) (GdkWindow          *window,
                                             GdkTitlebarGesture  gesture);
+
+  gboolean (* gdk_window_is_impl_offscreen) (GdkWindow *window);
 } GdkPrivateVTable;
 
 GDK_AVAILABLE_IN_ALL
diff --git a/gtk/gtkmenu.c b/gtk/gtkmenu.c
index 3f1a7bc9fa..18bef6957d 100644
--- a/gtk/gtkmenu.c
+++ b/gtk/gtkmenu.c
@@ -5218,7 +5218,8 @@ gtk_menu_position (GtkMenu  *menu,
   rect_anchor_dx = priv->rect_anchor_dx;
   rect_anchor_dy = priv->rect_anchor_dy;
 
-  if (priv->rect_window)
+  if (priv->rect_window &&
+      !GDK_PRIVATE_CALL (gdk_window_is_impl_offscreen (priv->rect_window)))
     {
       rect_window = priv->rect_window;
       rect = priv->rect;
@@ -5264,7 +5265,7 @@ gtk_menu_position (GtkMenu  *menu,
     }
 
   if (rect_window != NULL &&
-      GDK_WINDOW_TYPE (rect_window) == GDK_WINDOW_OFFSCREEN)
+      GDK_PRIVATE_CALL (gdk_window_is_impl_offscreen (rect_window)))
     {
       GdkWindow *effective = gdk_offscreen_window_get_embedder (rect_window);