Valdo mod is not functioning properly.

On valdo map mod "Monsters Kill things with 20% or lower Life on Hit" can kill you by bleeding, but bleeding is not count as hit.

You have to hit to inflict bleeding. Or are you saying you were bleeding, everything was dead, bleeding took you to under 20% hp, and then you died with absolutely nothing else hitting you at the same time?

Because that's impressive if you were able to distinguish the % hp you died at. Unless you have it recorded in which case you should probably include that in your post.