When "Activate Panel" is on and Osc 1 is in the lowest octave (16') and in the "-1" keyboard octave, F and Ab keys on the keyboard are just about the same note (the F is a tiny bit flatter than the Ab).
When Osc 1 is in other octaves (8', 4', etc) and the kb octave is in any other octave, the F key plays an F. This behavior doesn't occur when I'm using the presets, only with "Activate Panel" and "F" is the only note that comes out wrong.
I can kind of fix it by adjusting the resonance, but no other notes exhibit this behavior.
Is this a bug?