How do the "Blink and You'll Miss It: 1 Turn Victory" Duel Replays manage to win?

Solution 1:

Update

I finally had this annoying bug happen to me, and there is one small thing that the duel logs does not show - a Waiting for Response message. After this message disappears, it will either continue the duel as normal or I will receive the failed message.

I have watched quite a few of the “Blink and You'll Miss It: 1 Turn Victory” replays and I will have to say this is an interesting occurrence.

The opponent did not Surrender, as the duel log will display "You/Your Opponent Surrendered" instead of "Failed"

These "victories" also do not fit into a Zero Turn Kills, First Turn Kills, or One Turn Kills, leaving the only other explanation is being a poorly implemented network disconnection bug.

As discussed on this reddit post, it talks about how this is a bug in the PvP arena. This duel made it all the way to Turn 12 before disconnecting with both players still having Life Points remaining.

In addition to the reddit post, I watched a replay where the opponents Life Points went from 4,000 to 0 to 4,000 in a faction of a second; literally within a blink. The image below shows a "victory" even while the opponent still have 4,000 Life Points.