Aside from the browsers, I don’t know how many times I had to fix TLS handshake failures due to the server sending only the leaf certificate or argue with peopl

Aside from the browsers, I don’t know how many times I had to fix TLS handshake failures due to the server sending only the leaf certificate or argue with people who insist on shoving the full CA chain (sometimes including the leaf) in the ca-bundle/trustore, even after I link them the TLS RFC. This really should be better documented and enforced.