Looks like a bug to me.
You may affect the creation of the pattern via settings in the StyleMaker, such as Opt/Voice Leading -> 'riff based' AND 'Transpose Down Limit'. Transpose Down Limit "12" makes G2 play, yet transposes C(4) down to C(3). Transpose Down Limit "6", say, makes C(4) play, yet transposes G(2) up to G(3).
You might want to send a demo file to support and/or upload such a file to a free file server such as
www.2shared.com to have others participate in the solution process.
Edit: Don't use 2shared.com - that's a spam nuisance.