Thanks for playing! The numbers stick based on if they are adjacent to the cursor. I’ve added a gif to the screenshots that I hope will help understand it a bit better.
Definitely with you on the audio. It was the last thing I added in the time I had and immediately wanted to do more to it for the same reasons you said. More time would have had my first attempt at creating a track, so might be a good thing I didn’t get to that point ;p