Small bug in plugin/includes/cache-class.php:112:
private function get_post_type_taxonomies( $post_type ) {
return get_object_taxonomies( $post->post_type ); // $post is undefined
}
Should be $post_type instead of $post->post_type.
Since $post doesn't exist in this scope, it passes null to get_object_taxonomies() which then returns all taxonomies instead of just the ones for the current post type.