Ticket #14122: fix-capabilities-on-default.patch

wp-includes/post.php

@@ -920 +920 @@
         if ( empty($args->capability_type) )
                 $args->capability_type = 'post';
 
+        if ( $args->capability_type == 'post' && empty($args->capabilities) )
+                $args->map_meta_cap = true;
+
         $args->cap = get_post_type_capabilities( $args );
         unset($args->capabilities);