Suggest implementing (at least for development) a message to explain what killed you. This would help with bug reports.
If you keep allowing players to die for no reason after spending weeks working on their characters, then you are going to lose testers at an alarming rate. For me, this was the one bug that really pushes me towards leaving. I'll give it a day or two and start up again.
Can lightning kill you? Can having a fire in a barn kill you? There may be another way I died here that is unbeknownst to me.