Had a great 6min fpv flight/test and decided to let it land itself during RTH it was about 20 feet from ground and started bouncing up and down, did this 3 times. I took control back rotated it 180 deg and it stoped. Turned it back so the sun was on the left side of the Naza and it did this again. I had about 30 fights and this never happened, now I have had this 3 out of my last 4 flights, any chance this has something to do with the last firmware update. Wish DJI would give us some info on this. I am doing a full tear down and rebuild so Naza will be getting some electrical tape on left side.