I don’t usually use Song mode but I’ve been experimenting with it today and noticed that sometimes the cursor just disappears. It happens when there is a row that is queued-up and you navigate to a row above or below the queued-up row. Actually the cursor goes away no matter what row it’s supposed to be on as long as a queued-up row is on screen. I show it happening in the video while a song is playing but it happens when the song is not playing as well.
I’m on X.04.