Witches are throwing themselves towards players while throwing a potion, and they will get hit by their own potions.

When you fight a witch, they will throw themselves towards you, causing them to get hit by their own splash potions.

To reproduce
1. Spawn witch
2. Go to survival

Eventually the witches will already notice you and tries to hit you with their potions, instead the potions backfired at them as they are throwing themselves forward. Witches shouldn't be throwing themselves forward and shouldn't get hit by their own potions.