Sometimes when my players (sleepers) are killed from someone, when come back they cant see from who get killed, is this bug from rust? or something else? i restart the server every 24 hours, but i think this should no effect that

I think itsi rust bug. After the wipe I get killed by unknown (no name/..) too, so I think that's just rust 

If I don't restart it it will fixed? Maybe the killer's name saved in ram and no in a file