compositor: Damage below before attaching new buffer
diff --git a/src/compositor.c b/src/compositor.c
index fb664f6..08278c6 100644
--- a/src/compositor.c
+++ b/src/compositor.c
@@ -988,6 +988,8 @@
 	struct weston_shell *shell = es->compositor->shell;
 	struct wl_buffer *buffer = buffer_resource->data;
 
+	weston_surface_damage_below(es);
+
 	if (es->buffer) {
 		weston_buffer_post_release(es->buffer);
 		wl_list_remove(&es->buffer_destroy_listener.link);