Death Sentence in SE

In vanilla Skyrim or LE, the death sentence works like this: after the target's armor rating drops to zero, it will continue to decrease further, taking on negative values. This results in a huge increase in physical damage dealt to the target with melee weapons, the effect of armor damage stacking, making it possible to kill an opponent with several thousand health in one hit even with weapons with low damage.
But for some reason this does not work in SE, I can assume that such mechanics were not incorporated by the developers and came out by accident and they fixed it in SE.
Question: Is it possible to fix this fix or is there another reason?