Hi

Yes indeed you are correct.
The first note should have finished at the same time as the two above to complete that chord for that duration. The blue /green ones are overlapping notes and should and would exist as red notes to complete those chords, problem is as you say the first note got a stuck midi note state.

No idea of what caused this but did you run out of polyphony ?
Unlikely I would say unless you were sending a lot more midi notes at that time that we cant see in pic

Mike


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