@craig Polini firstly welcome to the forum sorry it had to be in such circumstances
there are many reasons why the
Mini 3 pro could suddenly fall from the sky
but two things point to a possible cause in your case
would i be right in thinking that where you were flying ,the air temperature was quite high and also bright and sunny
and that was compounded by the fact that you were hovering at the time as well
i say this because the
MINI 3 pro gets quite hot anyway ,simply because it relies on an airflow over it to dissipate heat ,as it has no internal fan to help in such matters ,it should flash up a warning message on the screen to tell you this ,but it is easy to miss this if your attention is drawn else ware, this causes it to shut down ,and then the inevitable gravity takes over
but this is only my take on your post ,and without the data it is purely a guess on my part