Lunge propels the player even when aiming for an entity

Upon doing a jab attack, it would be expected for the spear to attack the mob and not propel the player forward, however if the player is aiming for a mob he both damages the mob and propel himself forward.

How to reproduce:

1. Give yourself a spear enchanted with any level of Lunge.

2. Summon a mob.

3. Move a few blocks away from it.

4. Aim toward the mob and perform a jab attack.