My bad. I should just have read the title of the thread correct.
The preset you mention is a CMI preset. It's a sequence, but it is triggered by a key on message and should stop when a key off message is sent. Does it keep playing every time you stop your DAW, - at any time you stop it, and no matter you play notes or not at the same time, when you stop the DAW? Something that may cause hanging notes.
I can't rule out there may be a issue of some kind where Analog Lab/ CMI is the culprit.