Many of us are getting banned from other instances because there is a bug where kbin is sending way too much traffic per interaction. I know that was affecting federation (according to other instance admins) so It might have something to do with that. The content on kbin does seem to me like it's not in sync at all, but I haven't measured it.
All we can really do for now is hope for a fix and not interact with posts from other instances.
This post made it over to reddthat, so your posts are federating out.
Checking over on my kbin account as well, I can see content in /newest from multiple sources. /sub returns 404 but I think that's just a caching bug (adding ?p=1 to the end of the URL lets me workaround it).
It took about a minute for my comment from reddthat to show up here, but it looks like it made it through ok, so inbound comments are working. (Note: replying to myself from my kbin account)
thanks. I actually was seeing something similar at the start of the weekend but it sorta reveresed on me where sub works and newest gives me the 404. I have been looking through my sub and I am seeing lemmy mags. Thanks for the feedback.