I’m believe I’m the user that asked Brad for that feature because the “Panic Button / All Sounds Off” would send midi data that affects a few channels on the X32 and there was no way to filter out these low level commands at the midi port.
Refer to Panic Button / All Sounds Off
With that said, I tried to duplicate your problem and could not. When the box is not checked and panic button is pressed, the X32 faders do not move. When the box is checked, the faders move. When the box is checked and Cantabile exits, the X32 faders do not move.
Even when the panic button was sending the midi “All Sounds Off” packets before the feature was added, I do not remember the faders ever moving on a Cantabile exit. The problem only happened when Panic was activated. I wonder if Cantabile is cleanly shutting down in your situation?
If you have any particular cases you’d like me to attempt to reproduce, please respond in this thread or DM me.