I confirm uglyness, but it seems that it's the way it was coded since years ago and no one improved it.
You can edit forum section names when you add (or edit) a forum as admin. (in the forum edit form)
Clunky, but works. An dyuo can cheat the sorting of sections (alphabetical by default) by means of prepending spaces in the name of each section as needed.
Welcome to Tiki, and welcome to see you helping, fatiki ;-)