This is how Texinfo (which this uses) works. It's the same if you navigate it with an Info reader: "n" goes to the "next" node, which behaves as you point out.

This is how Texinfo (which this uses) works. It's the same if you navigate it with an Info reader: "n" goes to the "next" node, which behaves as you point out. When I'm reading in an Info reader (almost always in GNU Emacs) I always hit the spacebar when reading. This scrolls down a page and, if it's at the end of a page and, if at the bottom, goes to the next subnode - in other words, what "makes sense." (Actually the binding for this is "Info-scroll-up".) That doesn't help when you're on a website, but for me Texinfo websites have a distinctive look and when I see them, I immediately know what clicking "Next" will do, and I know to instead go to the bottom of the page and go to the subnodes if that's what I want, which it typically is. I agree that it's weird...but maybe understanding the overall weirdness of Texinfo helps it all make sense?? A more coherent weirdness?