@rimu@piefed.social
But the logins from Voyager are returning 400 (Bad Request), although the username and password are correct, and to me, the request looks good.

I posted what is coming into the server. The only anomaly I saw was that the session cookie referrer seemed odd. Can you look at the request I posted? Do you see any reason it would be seen as a bad request?

The odd thing is that while I get an error 95% of the time trying to log into Voyager, twice it did let me log in. I don't know what was different about those 2 times.

Nothing gets logged to syslog, any nginx logs, pyfedi.log, or journalctl.