Won rounds no longer end in a draw
A match you had already won could still be scored as a draw. When your last standing enemy fell in the same round as an end-of-round effect, like a burn tick or the late-match damage that ramps up in long fights, that leftover damage could strike down your own final Fighter and end the fight even.
That is fixed. The moment one side is wiped out the round is decided, and end-of-round damage no longer gets a chance to level the score after the fight is already over. A genuine trade where both sides fall together still ends in an honest draw.