I dont exacly know if this count as bug but defenetly confused me…
When you play some pattern for example on track01 with instrument00 that you are editing modulation and pattern focus is on another track, “Key Tracking” operand is not updating modulation visualization.
Im not sure if this is a good eplanation so ive made screenshot + simple example to try out:
6416 key-tracker-visualization.xrns
btw. nice vowel filter