Skeleton shoot arrows to players shield cause hurting himself

When players using the shield while skeleton shooting arrows at close range, the arrows bumped back and hit the skeleton.

Steps to Reproduce:

1. Wearing a shield, crouch to using it
2. Spawn a skeleton
3. Try to stand away from the skeleton in different range from its shot

Expected Results:
The arrows from the skeleton shoot onto the player shield get bump back randomly

Observed Results:
The arrows from the skeleton shoot onto the player shield get bump back right on the skeleton