Hi
I'm trying to use the Song Form tab to structure a song.

I have entered a simple 8 bar progression (A) followed by another simple 8 bar progression (B) just for practice. The song is set to Start at bar 1 and End at bar 16 with 1 chorus. Despite this BIAB adds 4 more bars with a random chord in bar 17 and the next 3 bars blank. Why is it doing this?

Then I go to Song Form and enter Section A to Start at bar#1 and # of bars 8. Then I set section B to Start at Bar #9 and # of bars 8. Then I set the Form as ABA and hit the generate button.

It then creates the song and has Part A, then Part B but the next Part A starts at Bar 18. Bar 17 with the random chord is still there. Probably something simple that I am missing but I would appreciate some advice.
Cheers
Mick