Playground's bug

In battlefields, damage to heroes does not go through after winning a round, I noticed this already in 4 games in a row, I deal lethal damage to the opponent’s hero, it is canceled, 0 damage is counted and the opponent continues the game as if nothing happened, and may even win this game, since he was given a second chance as if the magician’s secret permanently affects him, canceling fatal damage. This bug greatly changes the balance of the game in battlefields. I noticed it after the last update with adjustments to the battlefields and standard balance. Thank you for your attention, I hope you will consider this matter.