Unable to login

[loleg]

This is an intermittent issue affecting my newest server (Ubuntu at Linode, Stackscript deployment). With an incorrect username and password, everything is fine. The password reset and sign up is working. When a user enters their correct username and password and clicks Log in, nothing happens. No errors in the console. All I can see is an empty POST request going out and getting stuck. In the Docker (nginx) logs, there is nothing. Again, it works fine when the username or password is incorrect.

It might be that some process is locked in Docker. After a restart it seems to work fine. Tested in Firefox, Chrome, Chromium.