I strongly dislike the idea of automatically jumping into a folder when there’s only one match: it feels like a feature optimised for very slow typers that actively penalises fast typers, because it makes things generally unpredictable: will one character be enough to navigate, or two, or three? It depends on the siblings, and if you type more characters than are required, you will be penalised by ending up somewhere else as the remaining letters are fed to the next level down that you haven’t even seen yet. My general habit in navigating is to type three characters and press Tab, because that’s almost always sufficient, and is plenty fast. I have a very few places where I’ve learned to do other things. Under my habit, I could end up as much as two levels down from where I wanted to be.