Ticket #19471: add-custom-post-types-to-core-taxonomy-archives.diff

wp-includes/query.php

@@ -2212 +2212 @@
                         $where .= $clauses['where'];
                 }
 
-                if ( $this->is_tax ) {
+                if ( $this->is_tax || $this->is_category || $this->is_tag ) {
                         if ( empty($post_type) ) {
                                 $post_type = 'any';
                                 $post_status_join = true;