Just experienced a new problem yesterday. My controller is spontaneously powering down during flight. I had about 4 or 5 occurrences during 3 battery flights. Flights were all close proximity. Each time the app announced "wifi signal lost" and when I looked down at the controller it was powering down. Each time Solo executed RTH and landed. The controller was fully charged before flight and the battery meter shows almost full. Has anyone else experienced this?