get xwayland working again

src/core/window.c

@@ -1613,7 +1613,8 @@ meta_window_new (MetaDisplay       *display,
                                    META_WINDOW_CLIENT_TYPE_X11,
                                    NULL,
                                    xwindow,
-                                   TRUE,
+                                   /* XXX */
+                                   !meta_is_wayland_compositor (),
                                    existing_wm_state,
                                    effect,
                                    &attrs);

src/wayland/meta-xwayland.c

@@ -48,6 +48,8 @@ xserver_set_window_id (struct wl_client *client,
     {
       surface->window = window;
       window->surface = surface;
+
+      meta_window_set_surface_mapped (window, TRUE);
     }
 }