Firework Rockets Fired From Crossbows Fire Below Crosshair

When firing the Crossbow, with rockets, the rockets will fire slightly under the player's crosshair, making aiming a bit annoying.

What I expected to happen was...:
I expected it to come directly from the crosshair, as that would make the most sense to me.

What actually happened was...:
Instead, it comes out from underneath the crosshair, often getting stuck on blocks instead of going where you wwere aiming.

Steps to Reproduce:
1. Put a crossbow in your mainhand.

2. Put firework rockets in your offhand.

3. Load the crossbow.

4. Fire while standing on the ground, and pay close attention.