I was looting a two story red barn with the hay bales in it. While on the 3rd story walking down the stairs to the 2nd story I instantly died with no reason. There was no other broken limb/bleeding messages, no sound, just black screen. My character did not fall and was in the center of the stairs jogging downward.

The specific barn is isolated by itself NW of Komarovo and SE of the military base, the barn also has a well next to it. I was on the western side of the barn, 3rd going down to 2nd story when it happened.

The weather was raining (thunder and lightning nearby), I had a fire going on the first floor, I was in outstanding healthy, energized and hydrated.