Forcing TLS 1.3 not working

I’m trying to force TLS 1.3 (disable TLS 1.2) and thought I followed the docs correctly. Verified the config in the web dashboard:

But when I make a curl request with TLS 1.2, the request is successful, whereas I expected it to fail:

Did I do something wrong, am I misunderstanding, or is the TLS versions feature broken?

Hi! You’re not misunderstanding, this just doesn’t work. (If you were to ask me why we have that feature documented, I wouldn’t have a good answer).

I’m going to have a look and see whether this was just not done, or if there’s some technical barrier to supporting this as expected.

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