I mentioned in the adjacent post but if you do see magazines acting oddly, it could be there are no local subscribers. Hopefully we get a UI fix in soon with the PR I had mentioned, because it's a bit of a bad user experience now. (I noticed world from lemmy world on debounced's instance was getting no posts, or rarely a post with no likes, and subscribed, and suddenly everything came in fine.) So probably a good idea for people, if you want to see posts from somewhere, make sure to subscribe.
(This was technically always true, but a while back admins were auto subscribed so a magazine would always have 1 subscriber. That changed, and that change was even backported to kbin by ernest, so it should be like that back in kbin too for new magazines.)