Anyone have this happen. Had left the bird sitting in the driveway in the shade with the radio and DJI go app connected, no props installed while I was working out some calibration issues with the camera. Went inside to check some camera settings on the computer for about 10 min. Also thought it would be a good opportunity to burn down the battery before putting it away for the day. Decided to hover it some to finish off the battery so I carried the props with me and installed them. Looked at the app and everything seemed fine. Had 17 sats battery at 45% using the DJI go app. Also I had returned about 1 hour earlier from the local RC field where I had used up 3 batteries with no issues. Placed the bird in a clear location set the home point and eased it off the ground and yes I was flying in P mode. I relaxed the sticks and the bird continued to drift very very slowly upward. Thought that was strange so I pulled the sticks back to stop it. It did and then started to descend in the same fashion. So I was playing a slow game of yo yo for about 30 seconds until I saw an opportunity to land it. Moved the bird to another location with a little more room and it did the same thing. I then rebooted the bird, but not the radio or app, and it all seemed to fly correctly. Never had this happen before. All the firmware is updated and although I use the Autopilot app it was not on or running in the background during the time.