100% checked that in DJI GO several times.
Note that in the mission I was over 2500ft away.
Again, the bug is the code is comparing the path length of the map to the max distance set.
I know this because on each battery swap it revealed more of the map and did eventually complete the mission. So as the path length got shorted (because of the completed parts) it extended the mission,.
It’s is not intermittent for me, happens every time. The GPS had 17 satellites. I waited and tried again (and again).
I passes the check the second time because it cuts down the map so the path length of the map is smaller.
Hear me now, believe me later. 
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