Andreas, in some of the previous versions of BTT when using the list from "Show / Choose From List (Configurable)" action I was able to go to the 1st item whenever I press the down arrow while on the last item, but is no longer possible.
I'm not sure about if the other way around worked before, but I think it will be good addition - when on the first item pressing the up arrow to go to last item.
I think I can add an option for this. I just checked spotlight and some other similar list style apps, and they all don't jump back up by default so I think the current one is the common approach. However I also get that the circular approach might work for some users.
I guess you are busy with other features/bugs but were you able to check on that? I have some long lists and going to last item takes a lot of time. Just additional info - my lists are generated by "Retrieve Content Dynamically via Java Script / JSON"
Not yet, but there is also a macOS standard shortcut for list navigation to go the last item (I think this works on all SwiftUI lists):
opt+arrow down (arrow up to go back to the first item), maybe that can help for now.