My Magic Mouse suddenly did the same thing on me. It connects but only cursor and swiping works but tracking doesn’t at all. I already cleaned all the bulbs and the inside where the batteries go and blew it with compressed air to make sure all dirt is out. I unpaired it and reset it to factory settings too. Same thing keeps occurring. I put in freshly charged batteries. The tiny green light isn’t on at all even though the mouse is connecting and everything else is working. Help please?