Propellers displaying in video footage

In my current video footage I intermittedly have propeller blades showing in the top right hand side of my footage. The props do not look as though they are bent in any way but there is obviously an issue. Any body had a similar issue??

Terry; you’ll find lots of info on this if you google the term. Also means lots of opinions from angle of sun, speed of head/cross winds and limiting angle of gimbal in Advanced settings.
You can also use the propellers to create an effect in the video.
Mine still creep into shot when least expected.

Thanks for your reply Bruce. I did check google and was suprised at how many comments there were. When you see things like this you tend to think that it is only you and the world is a lonely place. Good to know you are not so alone.