"HTTPS-Only Mode Alert Secure Connection Not Available" gets triggered when loading is slow, and the false positives teach users to ignore the warning

Load your Tor Browser, then move to a network where Tor can't connect, e.g. because it is firewalled or because you're captive portaled or etc.

Then type a non-existent domain into the url bar (I picked dffffogifdgoise.org) and hit enter.

After a few minutes, Tor will give up trying to find a circuit for that domain, and it will give you an error page.

In the old days, we'd get the "We can’t connect to the server at www.dffffogifdgoise.org." error page.

But now (Tor Browser 11.5) we get a new page, telling the user "You've enabled HTTPS-Only Mode for enhanced security, and a HTTPS version of dffffogifdgoise.org is not available." and then "Most likely, the website simply does not support HTTPS."

I'm attaching a screenshot of "I failed to reach news.google.com" which mistakenly/misleadingly turned into the https-only mode warning: