Can you help me with an issue?

I have several playlists scheduled for an evening. The first one starts at the given time without a problem but all the others don't. After the first playlist Auto DJ plays a few songs from general rotation, sometimes only one, sometimes more, and only then continues with the schedule. A few times the next scheduled list didn't start at all. Is there a bug or am I doing something wrong?

All my general rotation lists are set to play from 12 AM to 12 AM with weight 16 and scheduled lists are set to start at 8 PM, 8:55 PM and 9:55 PM, stop after 60 minutes, repeated every week, can be interrupted. It makes no difference if the list consists of multiple tracks or just one hour-long file.