woocommerce - prevent_caching() bug / bypass

As guest visit the following links and look at the headers. Yup there are not caching headers in the response. (https://woocommerce.com/.cart/)[https://woocommerce.com/.cart/] (https://woocommerce.com/+cart/)[https://woocommerce.com/+cart/] …

accept-ranges:bytes
age:0
content-encoding:gzip
content-type:text/html; charset=UTF-8
date:Mon, 19 Jun 2017 13:25:20 GMT
link:<https://woocommerce.com/wp-json/>; rel="https://api.w.org/"
link:<https://woocommerce.com/?p=18552>; rel=shortlink
server:nginx
set-cookie:woocommerce_items_in_cart=1; …