Ticket #20493: merge-terms-with-children.diff

wp-includes/taxonomy.php

@@ -755 +755 @@
                                 $children = array_merge( $children, get_term_children( $term, $query['taxonomy'] ) );
                                 $children[] = $term;
                         }
-                        $query['terms'] = $children;
+                        $query['terms'] = array_merge( $query['terms'], $children );
                 }
 
                 $this->transform_query( $query, 'term_taxonomy_id' );