I just changed the name of my deck to something that would make it more useful to other students at my school. Now it’s at the bottom of my decks list because it’s sorted alphabetically. I expected it to stay at the top because it’s the only deck I’m actually using.
So, workaround to make the UI more intuitive (and less annoying) are to delete other decks (but I want some of the things in them), give my main deck a less intuitive name that makes it alphanumerically first, or just ignore that the UI de-prioritizes it (cognitive load to get to where I’m going every time).