Ticket #25678: 25678.2.diff

src/wp-admin/includes/class-wp-upgrader.php

@@ -2137 +2137 @@
                         $next_user_core_update = $core_update;
                 $newer_version_available = ( 'upgrade' == $next_user_core_update->response && version_compare( $next_user_core_update->version, $core_update, '>' ) );
 
-                $newer_version_available = true;
-                $next_user_core_update->version = $next_user_core_update->current = '3.8.1';
                 /**
                  * Filter whether to send an email following an automatic background core update.
                  *