Hi there,
That might not do the result you are looking for as it seems something related to your environment. I suggest that you move your website to a staging server and test the case. You will need to disconnect the site DNS from the CloudFlare to do the check.
That way you will be sure that the environmental settings are not the cause of the issue. I also tried the same thing my colleague did on 2 of my installations and it is working with no issue.
Another way to test is to have a fresh installation of the Cornerstone and the theme on your local machine or a server for example.
Our testing shows this is not a code related issue and there should be something related to the environment.
Thank you for your understanding.