Thank you very much Matt and Noel, I appreciate your help with this.

Well, I tried removing that part marker at Bar 9 so it is neither a blue or green, just the white bar. I then re-generated the song but the chord is still cut-off at the end.

Having removed that part marker at bar 9, I now have the blue marker at bars 1 and 13. I tried removing those as well.

This is a mystery. It works for you both but still not here.

I wonder if you have some default setting which has been changed here?