The Tor Browser is showing caution sign but your document said it won't

https://support.torproject.org/onionservices/onionservices-5/

Above support document shows that The Onion Service is served over HTTPS with a Self-Signed certificate. WILL NOT show caution sign.

However when I visit HTTPS onion signed with self-sign AND not expired AND not wrong domain the Tor Browser 11.5 clealy shows this:

Warning: Potential Security Risk Ahead

Tor Browser detected a potential security threat and did not continue to www.REDACTED.onion. If you visit this site, attackers could try to steal information like your passwords, emails, or credit card details.

What can you do about it?

The issue is most likely with the website, and there is nothing you can do to resolve it.

If you are on a corporate network or using anti-virus software, you can reach out to the support teams for assistance. You can also notify the website’s administrator about the problem.

Advanced ---> AcceptContinue

• Result: An onion with caution sign

Why is this? Can you fix this already? To repeat, this is NOT certificate's mistake.