Ticket #22133: class-wp-xmlrpc-server.php.diff

wp-includes/class-wp-xmlrpc-server.php

@@ -836 +836 @@
                         'wp_author_display_name' => $author->display_name,
                         'date_created_gmt'       => $page_date_gmt,
                         'custom_fields'          => $this->get_custom_fields( $page->ID ),
-                        'wp_page_template'       => $page_template
+                        'wp_page_template'       => $page_template,
+                        'wp_page_thumbnail'      => get_post_thumbnail_id( $page->ID )
                 );
 
                 return apply_filters( 'xmlrpc_prepare_page', $_page, $page );