DJI Air 2S. I just noticed that whenever my propellers are spinning, my rear indicator lights flash red. The flash rate is the same as the front LEDs. Battery level >90%. I don't remember them flashing red before. The manual suggests IMU failure but the drone calibrates the IMU and Compass without any issues. I have no other errors that I know of and the drone flies normally, though there have been a few times where my gimbal setting have changed (mostly in Sport) without me changing them. What else could it be? I've had the drone for just over a month and I haven't crashed it (yet). Also bought 2-years of Refresh. Thanks.