Inconsistent Control Change Value

I have an expression map set up that sets a control change value based on the playback technique. Sometimes it works great. However, other times it doesn’t work at all. I will play back the same passage twice in a row without changing a single thing and it will work one time and not the other. What are possible causes and how can I get this resolved?

Further details: The control change value will just stop getting updated periodically. However, if I add a few redundant playback techniques (the same one several times in a row) it will work again. And then usually, but not always, I can delete the redundant playback techniques and it will still work great. And then a few minutes later it doesn’t work at all again.

Can you put together a minimal project that includes your custom expression map and some steps that would allow us to see this behaviour for ourselves?

CC Issues Example.dorico (1.5 MB)
VDL (2.0 KB)

Attached. When I saved the file, none of the CC1 messages were being sent to the VST plug-in. If you duplicate the center/halfway/edge playing techniques to put them several times in a row, it should fix it.

Any progress on this? I’m still having the exact same issue.

Sorry, Bradley, I’m very busy at the moment, but your thread is on my list requiring further attention, and I’ll come back to you as soon as I can.