Hello,
It is a pleasure to welcome you to the Mavic Pilots forum.
I hope that you will be able to use the forum to further your safety knowledge and for the exchange of innovative ideas and as a resource for
current developments in Mavic quadcopter’s. Read the manual a few times and watch lots of Youtube videos on the subject to give yourself a good start.
Enjoy!
Most likely the setting to turn off the front (red) lights when recording is on. It's a good thing, especially if you film at dusk (the red glow shows up in the footage if they are on).