On 1.21.60.24 a bug was introduced where when you spam click to attack a mob while you are sprint jumping towards it, you will randomly lose all of your momentum. This creates noticable stuttering that is very annoying to deal with in game.

This issue actually seems to have worsened in 1.21.70.20, as instead of losing all momentum while attacking and sprint jumping, the player is almost teleported backwards.

Step to Reproduce:

1. Spawn any mob
2. Start sprinting and jumping towards the mob
3. Spam the attack button/key while sprint jumping towards the mob

Expected Result:
You keep all of your momentum while sprint jumping and attacking the mob

Observed Result:
You will randomly stop and lose all momentum, creating annoying stuttering