I have a patch where Osc1 will eventually start playing quite flat, by a semitone or more, for no clear reason.
To reproduce this:
-start with an init patch (plain sawtooth)
-set Osc Balance: -100; Initial Phase: 1
-set LFO2 Assign Target: Osc1 Pitch, Amt: 0%
-set LFO2 Rate: 111, Shape: Square, Contour: +44, Mode: Mono, Trigger Phase: 1
-set LFO1 Rate: 81, Shape: Saw, Contour: +47, Mode: Mono, Env Mode: On
-set Matrix Slot 1: Source: LFO1, Amt: +12, Dest: LFO2 Assign Amt
After a while, the pitch of osc1 will be flat. I'm not sure if this is caused by waiting for a while or playing notes, but after a minute of playing it's noticeably flat (you can use osc balance to compare w/ osc2). Changing to a different patch and back resets the pitch.
I'm not sure why this is happening; I've tried to ensure that all Oscs and LFOs are reset with each note rather than being free-running, so it's not clear what could be causing this.
Is it a bug, or am I just doing something stupid?
Thanks for your time 