I saw this issue and heard about it before, here I cought it on video whilst playing link:

https://youtu.be/6rEzJlkx2aQ?t=255

Sometimes the player spawns in a position that launches him into the air and kills him.

I also posted this on the forums:
https://forums.bistudio.com/topic/197195-some-spawn-positions-kill-the-player/