On my VPS, I'm using the same version for Let's Encrypt and my own CA. The ones generated by Let's Encrypt have the correct subject, the one for my own CA doesn't.
subject CN is no longer set · Issue #6463 · certbot/certbot
If you're having trouble using Certbot and aren't sure you've found a bug or request for a new feature, please first try asking for help at https://community.letsencrypt.org/. There is a much large...