Not exactly like yours, but one voice running gated sequencer had a strange fenomena for me
- I got a dive bomb at some point when it wrapped around
- so depending on split or layer, this voice came into action at different spots due to voices were split between A and B
- so without split, one thing happend and using A and B different thing happend
Calibrating oscillators and filter and envelopes fixed that.
- first calibration hung
- but resetting REV2 and try again worked
Just an idea....