Rubberband on hit when using 1.8 protocol (26.1.2)

[MrAstro18]

General Information

When getting hit while on the 1.8 protocol in Hypixel, the client rubberbands back to a previous position instead of properly applying knockback causing a desync.

Environment:
Minecraft version: 26.1.2
ViaFabricPlus version: Latest
Anticheat: Watchdog + NCP Movement Checks (iirc)

Bug Description

When getting hit while on the 1.8 protocol in Hypixel, the client rubberbands back to a previous position instead of properly applying knockback, causing a desync.

Steps to Reproduce

Connect to Hypixel using the 1.8 protocol
Get hit by a player or mob
Watch the client snapping/rubberbanding back

Expected Behavior

Knockback is applied smoothly without losing sync to the server and causing the anticheat to be triggered.

[Barvalg]

[Ghost-Kokoro]

Due to 1.21.9+ knockback precision update, it is not recommend to switch from 26.1 to 1.8. However, Hypixel allows 1.8 clients to play.

[lowercasebtw]

The knockback precision can be undone

[Ghost-Kokoro]

The knockback precision can be undone

It's not necessary for viafabric to do this. Hypixel allows 1.8 clients to connect.

[lowercasebtw]

The knockback precision can be undone

It's not necessary for viafabric to do this. Hypixel allows 1.8 clients to connect.

This is ViaFabricPlus not ViaFabric

[florianreuth]

We should revert the precision changes if there are any left, I didn't see them in 1.21.9 and 1.21.11