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.
tjhart85
livus