In particular, I can’t seem to see posts in the (local?) ELI5 community: https://lemmy.world/c/explainlikeimfive while I’m logged in?
Good news! Jilanico found the fix, go into your profile settings and make sure both english and undetermined are selected (I had to ctrl+click them, they were both highlighted blue when I clicked save settings)
Do you perhaps use Top Daily as your sorting? If there are no top posts today (no-one has voted), there’s no posts that can be shown. I can see the posts just fine, but if I change to Top Daily, there’s nothing. Newest post to that community was made three days ago.
It’s a good thought, but even this: https://lemmy.world/c/explainlikeimfive/data_type/Post/sort/TopYear/page/1 (which I think is showing Top Year?) shows no posts.
I have the same problem in several communities including the one you linked. I also have the issue of only being able to see the first page of posts in some communities, but clicking on the Next button yields no posts on the next page when I know there are more posts.
I get the same thing, but had assumed they were separate issues! All very weird. Does the issue go away for you when you log out?