Crashed twice, game killed my thrall

I have crashed twice while on the Black Ship, both times while running towards the back of the ship. Afterwards, the first time I fell off the mountain and died, and the second time I was eventually killed by thralls I ran in to while lagging out.

I also dragged my thrall Lian from one base to another and when I got there and was trying to make gear for him, he somehow died for no reason. Only thing I can think of is that he somehow drowned since my base is on a beach, but he wasn’t actually submerged anywhere.