Maybe I just hadn't noticed before, but I was working with smart playlists using the "last played date: not in the last" and realized that it's excluding anything never played (so new tracks are missing).
Has this always been an issue? Is it a bug or considered working as intended? I don't see a way to workaround other than just added a last played date to new tracks which seems less than idea.
I'm using the latest 3.9 beta 3 but I don't think it's related.