I believe that much like Lemmy, there’s an “all” button that gives you everything from everywhere.

Same, though ML made me think “Machine Learning”, and that it was a more tech-focused place. This was before I realised they they’re all (broadly) the same, and assumed that they were groupings of similar topics like an old web-ring.

It’s a known bug; you can work around it by navigating to page 2, then changing the 2 to a 0 in the url. Page 0 is basically page 1 but without the clearly-broken auto-update feature.