I have a lot of songs saved, but I don't use setlists, almost never.

So, in order to see more of the songs in the song library left panel, every single time I launch the app, the first thing I do is to click the "arrow down" button to minimize the setlist window, so the whole left panel is available for the song library.

It's definitely not a big issue, but it would be nice, if it would remember to stay down :-)