What the trill is happening here?

Here’s the optimized file:

clarinet_trill_fail.dorico (3.9 MB)

I have some insight into the problem:

This is a player with two instruments assigned to him. Because both instruments (an A clarinet and a B♭ clarinet) use exactly the same samples in my VST, and because they would obviously never play simultaneously, I have assigned both of them to the same VST and MIDI channel.

The trill is written for the B♭ clarinet. In addition to removal of the A clarinet from the score, I can get the trill to play properly via either of these methods:

  • Assign the A clarinet to some other channel or VST
  • Move the notation to the A clarinet
  • Make the B♭ clarinet the first instrument on the player’s list (in Setup mode)

It looks like ordering of instruments is affecting playback, when it shouldn’t. I would think that an instrument that isn’t playing would have no bearing on playback.