So I have a website (**https://**tomoro.com.au) which is all on Roots stack with a Let’s Encrypt certificate.
I also use a subdomain (**http://**example.tomoro.com.au) which directs to a Campaign Monitor account via a CNAME record, but it doesn’t have an SSL certificate.
Once you visit the secure Roots website in Safari/Chrome, any address on the same domain looks for https instead. So now trying to load the subdomain gives a security error because it’s redirecting to https://. This is not a problem if you visit in a new browser.
I know this is a browser problem, not necessarily a Roots problem, but is annoying.