On Safari, some websites don't work if I put a trailing dot to the domain

I accidentally printed and distributed a flyer that has a QR Code with a trailing dot in the domain (so it's "https://example.org." instead of "https://example.org"). I didn't notice the error because I tried scanning it with my phone and it worked.

People reported me that the QR does not open with Safari.

Doing some trial and error, I discovered that some websites like Google won't work on Safari if I put a trailing dot ("https://www.google.com."), while others like Wikipedia work correctly ("https://www.wikipedia.org.").

I knew that a trailing dot is a representation for a FQDN and should be working fine, so why won't Safari open some websites with a trailing dot?