Crossbow multi shot arrows don’t hit a entity at same time

When you use a crossbow with the enchantment multishot and shoot at an entity close, only 1 arrow will hit the entity but the other 2 arrows will pierce the entity.

Expected Results:

The 3 arrows will hit the entity with stacked damage.

What Actually Happened:

One arrow hit the entity and the other 2 arrows pierced the entity.

Steps To Reproduce:

1. Use a Crossbow with the enchantment Multishot.
2. Go close to the hitbox of any entity.
3. Shoot at the entity and you will notice that 2 arrows are left.

How Is The Best Way To Fix It:

The better way to fix this glitch is to remove the invulnerability timer for the entities, so the 3 arrows will successfully hit the entity and with 3 more damage than 1 arrow.