Music Stand App Lock Screen Override Not Working

Prior to the latest iPad iOS (16.6.1) and Music Stand updates (2023.6.1), the lock screen setting would be overridden and the iPad would not sleep while a set list was open. But today while rehearsing, I had to keep tapping the screen to keep the screen on. I couldn’t see a place to change the setting, I assumed it was a built-in feature. Is this a known bug?

I have also found this problem and also set list reloading mid service, taking the set list back to the beginning often during playing a song!