I played for a few hours last night and noticed a few problems which I don't know if they are a modified 5e mechanic in game.
When my character died, I did proceed to make death saving throws, but, after my 3rd successful save, my character did not wake up at 1HP, it just stayed on the ground with the death save "wheel" above it and nothing I could do would wake the character up.
Also, earlier, we had a party member die, failed his death saves, etc. We were unable to take him back to the camp with us so others may rest, unable to kick/remove the npc from the group either, even the the character was dead (it was one of the in game NPCs, not another account holder). So, the party is unable to rest, unable to proceed and we were not even able to split the party by dragging anyone away from the corpse.
Finally, ragdoll effects need none work. I shoved a 5hrall back on the ship and they became elastic man, and literally whipped all over the screen for about 5-6 seconds until the animation stopped.
That's it for now, but I am sure more early access bugs will show up.