Take https://lemm.ee/c/moviesandtv for example. From lemmy.ml, lemmy.world, and sh.itjust.works, you can't see any posts or comments from lemm.ee users, and lemm.ee users can't see any posts from other instances.
I don't know what's broken, but something is badly broken.
was an issue confirmed? I noticed -different from before- that my new subscriptions to communities stay in 'pending state' and don't seem to move to 'joined' as was happening before