Is it true that if you manually land (not auto-land) a Mavic and then lose signal, it’ll take off and RTH?  
That’s what this bloke said happened when he lost his due to low battery: (view from 8m23s)

Im curious also, I saw that vid a few weeks ago. I know mine attempted a return to home inside recently and that was an eye opener

I watched that video last week. To me it kind of sounded like he didn't fully touch down, you know how it kind of hovers for a second before it fully lands? I think he got to that state and shut the controller off.