AFAIK the playing techniques track only shows the Expression map, if you have (say for unpitched percussion) a single expression map (e.g. Natural) with a Percussion map to do the heavy lifting, it’s not showing up making it transparent whether you’re properly triggering your percussion techniques. Is there a way to see what it’s doing, or am I misunderstanding it?
Hovering over the playing technique helps, as it will say e.g. “Tremolo”, and there’s an entry for the Expression map, but adding an entry there for the Percussion map technique being triggered would be helpful, if not also adding it in the track (e.g. “Natural - Tremolo” to indicate exp map Natural with Percussion map trem).
Note: There is something in the hover that says “Internal Effects: Tremolo” - is that the indication for the percussion map technique being used?