Ticket #58246: 58246.diff

src/wp-includes/meta.php

@@ -1146 +1146 @@
          */
         $check = apply_filters( "update_{$meta_type}_metadata_cache", null, $object_ids );
         if ( null !== $check ) {
-                return (bool) $check;
+                return is_array( $check ) ? $check : (bool) $check;
         }
 
         $cache_key      = $meta_type . '_meta';