okay so this might be something i'm overlooking but in previous days when i lost in the underground matches i could see the point at which the last blow was landed and could reconsider my strategy to try and improve my win-loss ratio.
But on several occasions yesterday i was losing and still had both health and endurance and was the last person to land a blow. I thought at first it could be bleed damage but with 108hp after the last blow suffered, and 10-15 bleeding, i couldn't work out what happened.
i didn't notice this in arena fights so i'm sure it must be a bug.