--- a/wp/wp-includes/sitemaps/class-wp-sitemaps.php	Fri Sep 05 18:40:08 2025 +0200
+++ b/wp/wp-includes/sitemaps/class-wp-sitemaps.php	Fri Sep 05 18:52:52 2025 +0200
@@ -75,7 +75,6 @@
 		$this->register_sitemaps();
 
 		// Add additional action callbacks.
-		add_filter( 'pre_handle_404', array( $this, 'redirect_sitemapxml' ), 10, 2 );
 		add_filter( 'robots_txt', array( $this, 'add_robots' ), 0, 2 );
 	}
 
@@ -223,12 +222,15 @@
 	 * Redirects a URL to the wp-sitemap.xml
 	 *
 	 * @since 5.5.0
+	 * @deprecated 6.7.0 Deprecated in favor of {@see WP_Rewrite::rewrite_rules()}
 	 *
 	 * @param bool     $bypass Pass-through of the pre_handle_404 filter value.
 	 * @param WP_Query $query  The WP_Query object.
 	 * @return bool Bypass value.
 	 */
 	public function redirect_sitemapxml( $bypass, $query ) {
+		_deprecated_function( __FUNCTION__, '6.7.0' );
+
 		// If a plugin has already utilized the pre_handle_404 function, return without action to avoid conflicts.
 		if ( $bypass ) {
 			return $bypass;