Ticket #21651: 21651.diff

src/wp-includes/taxonomy.php

@@ -976 +976 @@
                 // Assume already escaped
                 $value = wp_unslash($value);
                 $field = 't.name';
+        } else if ( 'term_taxonomy_id' == $field ) {
+                $value = (int) $value;
+                $field = 'tt.term_taxonomy_id';
         } else {
                 $term = get_term( (int) $value, $taxonomy, $output, $filter);
                 if ( is_wp_error( $term ) )