Was having problems doing anything until I discovered I had gotten automatically logged out at some point. Couldn't post or change settings or anything. Only figured it out once I got the "You are not logged in" message when I tried to favorite something.

(Logins don't time-out now, do they? Because if they do that's going to cause a headache for the users and their ad and blacklist settings. Not to mention the patreons giving you money.)

Logins timing out is in theory possible, but only logins on the new system for Patreon supporters should experience it.

If they actually do time out and you use the site regularly, it's a bug.

On the other hand, if your IP changes for whatever reason, it'll log you off, since it tracks logins by IP to prevent account sharing.

That's probably what happened in my case. Thanks for clearing it up.