Started after the .19 upgrade, as far as I can tell. I think it's a cross-site queing bug. PMs, votes, submissions, nothing gets through. And I get a json error when I try to upload any image, even locally. Other people are reporting weird bugs with .19 too.
it appears that it was a mix of two issues... one was a problem introduced by a change on the webserver that i didn't expect to be related, then lemmy threw a 400 until it was restarted (so this is likely related to the federation issue). well then... at least this part is somewhat fixed.
You could upload it to imgur and then link here, but I think we all get that Massage while trying to upload a pic. In Thunder App, it states "login incorrect" though