My wild guess it is a qc problem, not a fw issue, as mine had that issue out of the box.
My story in brief: Bought a new MM some weeks ago and before first flight both the drone and tx were updated from 1.00.40 to 1.00.50.
During the first flight I did not pay attention to my phone screen at all due to shooting conditions but when Id landed the left rear beeped and I thought of some overheat issue but we had to wrap it up leave.
Second session was on a very calm evening shortly before sunset. I took off gently and went thru some settings with the drone hovering for a minute or so. Then I climbed to some 10-15 ft but when I then started to push it I got the yellow dialog from the app. But I did not read it beccause I thought the light was insufficent and I could hear some inconsequential sound and stared at the drone while gently taking it in for landing. It sounded like somewhere in between a stalling prop before fluttering. It never flutterred, but have you eg ever flown any indoor 3D plane with a
2S setup on 3S you've might have encountered something like that.
Well, my first thought was Ive somehow cracked a prop in transport or something. Took it down and examined all props but they were all as new. Second flight and this time I read the yellow popup stuff about an over-revving motor. Landed and went thru the props again and did actually make a 3rd attempt after rebooting everything. Same result of course, could fly around floating on air, but as soon as I tried to push it I could hear the sound from the props was sinister and landed again.
At home I couldnt find any damage on the props but when gently lifting the drone prop by prop I could see the ccw's felt thinner and bent more so I ordered new props.
Still waiting for new props and havent been fiddling with the MM since, as I usually shoot with the Mavic Air and do leisure flying with some FPV and 3D drones.
Well, I havent had time for any deeper examination, thats it, but then I found this thread and it suddenly seems like a qc issue or something - dji should have alerted as every drone has to be registered anyway. The prop design is a bit weak, Id rather seen something like the spark or mavic air qr props instead. An issue like this could eg cause nice flyaways or submarines, as I usually have some water involved when filming.
My consideration : Dont fly with the issue present. Its nasty. Havent had issues on drones but on planes with props cracking, nose and/ or motor flown away etc.