Hi.
I appear to have had the same problem 3 times now; the gps has apparently lost lock for a moment during manoeuvring in the mountains, and although Skydemon is still navigating correctly when the gps signal is found again, when looking for the log post-flight it is incomplete.
The log gives the landing destination but shows no track between when the gps signal was interrupted and the landing.
Version 3.12.12 updated 21 Oct 2019 - the above has happened twice, it also happened in July 2018 with the current version at that time.