Yes, that’s actually my main problem, which I did not voice well earlier:
In other Discourse installations, I’m used to always seeing some clickable logo at the top left of the sticky (here: dark blue) header. Even on small width screens. That logo allows me to get to the forum’s home page without the need to go into the hamburger menu. See for example https://meta.discourse.org itself.
In this very forum, the Docker logo that links back to https://forums.docker.com is only visible when not having scrolled yet. And that huge header needs one to scroll for sure.
Just to make sure my screenshots make some sense: it’s the light blue “Welcome to the Docker Community Forums” that confused me, as only a few pixels of that part are ever visible when I’m logged in. I figured that the light blue part would include the navigation that I was looking for (and was mostly hidden by the dark blue part), but logging out confirms it doesn’t.
So, for me, the main “problem” is the sticky navigation not including a direct link to the forum’s overview page.
Aside, maybe the light blue part should not be visible at all when logged in? There is no way to dismiss it otherwise (for me).