Why does Dorico do this?

Thank you @benwiggy and @dko22, to answer your questions.

  • The library is rather irrelevant since I get these issues across the board.

  • All the “stop” articulation does is press a keyswitch to allow polyphony. It has no dynamic associated with it and this happens in purely sustain or legato passages too.

  • The expression maps are set to use exclusively CC11, velocity is disabled.

  • I have of course tried the line tool and disabled, per your suggestion, the dynamics humanization (set to 0%).

This is the result using the Line Tool:


This is the result using the drawing tool

And this the result if I try editing it from the dynamics lanes instead.