Ah. Well, I still see the web interface pulling in new posts as I sit on the home page. But then, I also mentioned that my Lemmy instance (or, the instance I've joined, that is) is a couple of versions behind. (I'm not sure if they're behind on both Lemmy and the UI or on just one.) If they've changed that behavior in newer versions, that could be why I'm still seeing the web interface pull in new posts while you don't.
And if that behavior is removed in the newer versions, then I can probably expect all the issues I've mentioned in this thread to be resolved as soon as latte.isnot.coffee updates to more recent versions of either Lemmy or Lemmy-UI or both.