Pooch,
I experience the same behaviour for the guitar part.
Using ZZBOSSA.sty, and using only E7b5 chord in a test song of 4 bars, and using only the first guitar chord pattern in the A 4beat row, and setting Embellish pattern=none, and disabling 'Allow embellish of chords' in song settings, we do get sometimes a B 5th instead of Bb 5th. Can anybody reproduce this test ?
Return to Factory Settings don't change anything.
NB : the piano part is always correct, we always get a Bb 5th at each time you hit 'Play'.


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