It's still happening. As near as we can tell, there's nothing we can do on our end. Federation from .world is just ~1.5 weeks behind, but it's still happening.
I'm not really interested in casting blame - the Fediverse is complicated, and can be affected by any number of things.
All I can say is that we haven't been able to find an issue on our end, and at the same time, federation doesn't seem completely broken - just about 10 days slow, and only in the one direction.