Scaler 2 BeatMaker 3 midi effect issue

I’ve noticed an issue that when using scaler as a midi effect plug-in inside of BeatMaker 3 everything works great until you hit the stop button. It seems to enter some kind of midi panic mode, that then you have to randomly press the virtual piano keys to get scaler and the instrument track to play sound again. ??
I’m using an M1 iPad Pro 12.9
I know I can capture, drag and drop the midi file but it kills my work flow. I like using scaler as the master controller to all of the instruments channels via midi effect.
Any feed back would be greatly appreciated