After stopping pedaling with pedal assist or when using the thumb throttle and ceasing to pedal or throttle, the chain ring continues spinning. It is intermittent. Some times it behaves correctly and stops spinning when I don't throttle, and some times it spins in spurts of fractions of a second duration and sometimes it continues spinning for periods as long as 20 seconds. Even touching either brake cutout doesn't stop this motor activation but when actually using the throttle or pedal assist the brake cut outs work correctly. And when the "run-on" happens it is very low power meaning it is just enough to spin the chain ring but not enough to notice any power felt into the drive wheel.