Sent a log to Dulrik this eve, but I may have it sorted.
When stunned by a NPC, you are incapacitated.
When you are parched (or likely starving) and don't
have endurance, you will not have a means to recover
health to a point above 0. You will become stuck in
limbo.
Thus, to handle the bug. do one of the following
Players: eat and drink regularly.
Coders:
a) code tweak a calculation 1 tick post stun to set hit points to 1.
b) acknowledge critical incapacitation, make recovery 2-3 ticks
with some funky pecho messages
c) player's fault for fighting on an empty tummy, %age chance
of a, b, or death. Go ahead and put in the death by starvation
message.