Ticket #26871: 26871.diff

src/wp-includes/link-template.php

@@ -2454 +2454 @@
         // Return p= link for all public post types.
         if ( ! empty( $post_id ) ) {
                 $post_type = get_post_type_object( $post->post_type );
-                if ( $post_type->public )
-                        $shortlink = home_url('?p=' . $post_id);
+
+                if ( 'page' === $post->post_type && $post->ID == get_option( 'page_on_front' ) && 'page' == get_option( 'show_on_front' ) ) {
+                        $shortlink = home_url( '/' );
+                } elseif ( $post_type->public ) {
+                        $shortlink = home_url( '?p=' . $post_id );
+                }
         }
 
         return apply_filters('get_shortlink', $shortlink, $id, $context, $allow_slugs);