Ticket #16857: 16857.diff

wp-includes/query.php

@@ -2897 +2897 @@
                         if ( $term && ! is_wp_error($term) )  {
                                 $this->queried_object = $term;
                                 $this->queried_object_id = (int) $term->term_id;
+
+                                if ( $this->is_category ) {
+                                        _make_cat_compat( $this->queried_object );
+                                }
                         }
                 } elseif ( $this->is_post_type_archive ) {
                         $this->queried_object = get_post_type_object( $this->get('post_type') );