My question is about instrument tracks as seen at the attached screenshot. As you will see on the first 8 tracks, there is thin, light blue, vertical bars. After 8th track, these bars are missing. They cannot be clicked or moved or the color cannot be changed etc.
Looks like you have a remote device set up that works in banks of 8. Adding a Mackie HUI device in device setup will do that…even if there is no device.