Hello, today I tried to fly, but after couple minutes of flight, DJI go app 4 noticed "Braking now! Return sticks to the midpoint first". And it happend about 5 times in 2 minutes. There was no obstacles for sure, only bushes 30 meters under drone.  Maybe someone is familiar with this issue?

braking now

It happened to me to, i was exactly 50 metres up on a corn field with absoluty no obstacles at all

Maybe someone from dji can shed some lights on what triggers this message.

Thanks.
Edit: was flying in P-GPS and p4p was 73 metres away

What device do you use? Iphone or android platform? Maybe this glitches because of app? Soon I get Iphone 5s, I hope it works better on it