Game crashes when using sprint underwater. This happens when using the Improved Animations and First Person mods.
Version: 1.20.1 forge

No crash report?

crash-2024-05-31_12.57.11-client.txt
latest.log
I apologize. The mod works correctly when it works in conjunction ONLY with Improved Animations. However, when I added it to my main build - I started experiencing game crashes. Moreover, the game crashes not completely, it remains working, but a black screen appears, and nothing else happens. The crash occurs only from the first person, pressing sprint underwater, from 3rd person everything is fine.

Ah sorry didnt see the answer, but also got someone else on discord about this.

java.lang.IllegalStateException: Pose stack not empty
at net.minecraft.client.renderer.LevelRenderer.m_109588_(LevelRenderer.java:1431) ~[client-1.20.1-20230612.114412-srg.jar%23546!/:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:dynamiclightsreforged.mixins.json:CommonWorldRendererMixin,pl:mixin:APP:embeddium.mixins.json:features.render.world.clouds.WorldRendererMixin,pl:mixin:APP:mixins.oculus.vertexformat.json:immediate.MixinLevelRenderer,pl:mixin:APP:oculus-batched-entity-rendering.mixins.json:MixinLevelRenderer,pl:mixin:APP:oculus-batched-entity-rendering.mixins.json:MixinLevelRenderer_EntityListSorting,pl:mixin:APP:dynamiclightsreforged.mixins.json:WorldRendererMixin,pl:mixin:APP:supplementaries-common.mixins.json:LevelRendererMixin,pl:mixin:APP:supplementaries-common.mixins.json:ParrotMixin,pl:mixin:APP:mixins.oculus.json:LevelRendererAccessor,pl:mixin:APP:mixins.oculus.json:MixinLevelRe

This is some mod messing up, not a direct Firstperson issue.

The mod works correctly when it works in conjunction ONLY with Improved Animations

Improved Animations is an illegal mod, which is why it has been taken down from Modrinth/Curseforge, and no support will be provided for that. If that mod breaks the pose stack, corrupting all the rendering, that wont be looked into(the issue is also in Improved Animations, which is dead).