Hi
Yes that seems a likely reason
When I done my test the other day if I played precisely make sure to let keys fully return before pressing again every thing was fine.
However the first test I done playing odd handfuls of notes without attention of complete key return I did get the stuck notes.

Like in the Ops original test these where often around B3 and E4 that I would often play with my small finger depending when I crossed over especially if playing left hand chords.

I put it down to my sloppy playing for the test , which is why I went on to make a more precise test paying attention to complete key release.

I can see this being a problem with some classical piano.

Holding a note over as in tied notes to underlie notes in the next bar should be ok providing you don’t let that tied note return to the half point.

One of my problems is I tend to be a bit on the legato side as I often use evolving voices for sweep pads that can take a couple of bars to complete the sweep.
If this is layered as say rh voice 2, over grand piano rh voice 1. they both get the same key strokes.

Very interesting topic.

Mike

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