Potion of Harming Arrows Don't Heal Undead Mobs
What I expected to happen was if Wither Skeletons, Zombies, Zombie Pigman, and Skeletons were shot by Potion of Harming Arrows, they would be healed.
What actually happened was Wither Skeletons, Zombies, Zombie Pigman, and Skeletons took damage from Potion of Harming Arrows
Steps to Reproduce:
1. Get a bow
2. Get Potion of Harming Arrows
3. Shoot Wither Skeletons, Zombies, Zombie Pigman, or Skeletons
they take damage from the arrow (arrow alone also deals damage), with instant damage on the arrow it takes about 2 times as long
works fine by design