we are not defederated, but the sorting is acting up. I'm on vacation right now but have been looking into it. We'll be upgrading to 0.19 once the .2 patch hits which I suspect will resolve this issue. For now, I've found that there are a few "stuck" posts and under those sorting is pulling in new stuff.
If you're browsing all, the workaround right now is to sort by "hot" instead of "active"