I had this problem the first time I ran SimpleFOC Studio in Tree view (which was yesterday). Every time I tried to move the motor, it immediately jumped back to its original position. Then I looked at the Command Line interface and saw that SimpleFOC Studio was sending out a steady stream of T0 commands. There was nothing resting on my keyboard (I’ve had that happen, especially with things leaning on my 3D mouse, and it’s been spooky).
I opened SimpleFOC Studio again in Tree view a moment ago and it works fine. No stream of T0 commands. Ghost was gone.