Flight path flow white lines blinking

[Shawnz]

I have noticed while using DJI GO4 app with a magic pro the flight path flown is blinking. Is this normal or is it a warning?

 

[Thomas B]

I have noticed while using DJI GO4 app with a magic pro the flight path flown is blinking. Is this normal or is it a warning?

Screen shot?
... more info on your drone, mode, and device used pls.