Blocking Multiple Projectiles Cause Shields To Not Block

When a shield blocks more than 2 projectiles at the same time, there’s a rare chance one of them goes through the shield

Steps to reproduce:
Use a command to give yourself a crossbow with multishot (higher levels are more consistent)
Use another player to use a shield
Shoot that player with the cross bow

Expected Result:
Shield protects against all projectiles

Actual Result:
Projectile still hits the shielding player