Compare browsing on this instance
https://programming.dev/c/[email protected]?dataType=Post&page=1&sort=New
vs
https://beehaw.org/c/technology?dataType=Post&page=1&sort=New
especially the post “Site to track Subreddit’s as they go dark” which was posted 21 days ago, still showing up at the top of New on this instance even above newer posts, but beehaw has all new posts instead
and I am subscribed to that community so it should be federated too
I think part of the issue might be because that post is deleted? or at least the permalink for it doesn’t work
but also I just manually searched for https://vlemmy.net/post/430910 so now it shows up but still below the bugged post, but it shouldn’t have needed a search to federate that post manually
Federation is buggy and lagged behind especially with the influx of users. It’s currently not scaling very well.
Edit:
Also see this PSA: https://programming.dev/post/17801 which is a setting for site admins to improve federation, but then again, it may help that much.
There also may be issues between federating between different version of Lemmy.
That explains the missing posts, but what about the incorrect sorting order of the things that are already visible? Might be due to the post’s instance being deleted/moved?
https://lemmy.rogers-net.com/post/14495https://lemmy.rogers-net.com/That or messages getting delayed so sorting is out of order. If you are using a score based sort, votes also come in late too. Could also just be bugs.