I found one post from 12 hours ago that describes the problem: https://lemmy.ml/post/2650814 - but that’s all I’ve seen. Content is way down on lemmy.ml with nothing coming in from .world
EDIT: seems that lemmy.ml is getting some content delivered to .world, but .world communities seem islands on .ml that only have local new posts/comments.
Ohh, interesting, I was receiving posts from other instances, but for a few hours after I upgraded, my posts & comments did not appear anywhere else. That sounds suspiciously close to what you are describing.