I was kneeing in the office/ school building (first floor, the room with the open window/ hatch to the corridor) in Elektro and eating Tuna to open a slot in my inventory. Have taken 3 portions, when eating last portion my screen turns black and says "you are dead".
No hearable grunting, no hearable steps, no hearable shot, no hearable swinging of a melee weapon, no unconsciousness before death. I was in 3rd person view, no visible enemy of any kind next to me.
Was on low pop server with just 2 or 3 other players online.
I was well hydrated, not hungry, didnt't have any other status of poor health like bleeding, etc.
Maybe item-bug or issued to "sound"