Few more listed on the links here

https://fedecan.ca/en/guide/lemmy/for-users/how-to-find-communities#_3-look-through-other-instances-🌐

mander.xyz is nice for all the STEM communities

So while this isn’t the cause in your case, it is possible to sticky things to the main feed. It’s done by admins, and for example lemmy.ca has a welcome post stickied right now:

https://lemmy.ca/

I think it’s a federation bug. That post is on https://community.nodebb.org/, which isn’t a Lemmy instance but actually a different software.

Which in itself is cool! There are a few projects being worked on right now to make traditional forums compatible with activity pub. The idea being that someday you’ll be able to follow and post in official support forums for things right from your Lemmy account.

But right now, it might be causing some weird federation bug. Maybe the date of the post shows up to Lemmy as sometime in the future and so it’s always the “newest” post (or something similar)?

Ok yep, I have the display issue as well. Interestingly, it only affects some of the equations. I’ll take a better look this evening

Can you link the article so that others can take a look?

Manually downloading HTML posts would be more difficult, but it might be possible by parsing the data export you can download from Facebook