Ticket #12725: 12725.diff

wp-includes/link-template.php

@@ -1104 +1104 @@
 
         $current_post_date = $post->post_date;
 
+        // reset $in_same_cat if the post type doesn't support categories
+        if( ! is_object_in_taxonomy( $post->post_type, 'category' ) )
+                $in_same_cat = false;
+        
         $join = '';
         $posts_in_ex_cats_sql = '';
         if ( $in_same_cat || ! empty( $excluded_categories ) ) {