Taking damage after hitting an entity slows sprinting speed

[Jyguy]

Expected behavior

Taking damage after hitting an entity should not alter sprinting speed. This is the behaviour seen on the vanilla server.

Observed/Actual behavior

The FOV and sprinting speed are reduced when taking damage after hitting an entity during uninterrupted sprinting.

Steps/models to reproduce

1. Hold down your sprint key (or, enable toggle sprint)
2. Begin running by holding W
3. Attack an entity
4. Take any form of damage (e.g. fire, fall)
5. Observe that FOV and running speed are reduced

Demonstration video: https://youtu.be/MytXWu4hQGc

Plugin and Datapack List

None

Paper version

This server is running Paper version 1.21.4-118-main@73f7736 (2025-01-18T13:37:35Z) (Implementing API version 1.21.4-R0.1-SNAPSHOT)
You are running the latest version

Other

Enabling paper world config misc.disable-sprint-interruption-on-attack is a workaround to this issue but has other side-effects such as every consecutive hit being registered as a sprint hit (preventing being able to crit while sprinting).