Ticket #22473: 22473.2.patch

wp-includes/category-template.php

@@ -1062 +1062 @@
         if ( ! $post = get_post( $post ) )
                 return false;
 
-        if ( ! is_object_in_taxonomy( $post->post_type, $taxonomy ) )
-                return false;
-
         $terms = get_object_term_cache( $post->ID, $taxonomy );
         if ( false === $terms ) {
                 $terms = wp_get_object_terms( $post->ID, $taxonomy );

wp-includes/post.php

@@ -615 +615 @@
                 }
 
                 if ( 'post_category' == $key ) {
-                        $terms = get_the_terms( $this, 'category' );
-                        if ( ! $terms )
+                        if ( is_object_in_taxonomy( $this->post_type, 'category' ) )
+                                $terms = get_the_terms( $this, 'category' );
+
+                        if ( empty( $terms ) )
                                 return array();
 
                         return wp_list_pluck( $terms, 'term_id' );
                 }
 
                 if ( 'tags_input' == $key ) {
-                        $terms = get_the_terms( $this, 'post_tag' );
-                        if ( ! $terms )
+                        if ( is_object_in_taxonomy( $this->post_type, 'post_tag' ) )
+                                $terms = get_the_terms( $this, 'post_tag' );
+
+                        if ( empty( $terms ) )
                                 return array();
 
                         return wp_list_pluck( $terms, 'name' );