Minecraft version - 1.20.1
NeoForge - 47.1.79
Mod version - 1.8.0
I am using the latest version available

This happens when playing with mod "Doctor Who - Regeneration (42.0.0)"

Mod list:
Better Combat - 1.8.0;
Cloth Config API - 12.0.109;
Doctor Who - Regeneration - 42.0.0;
playerAnimation - 1.0.2-rc1.

P.s. Its also happens when using better combat 1.8.1 and forge 47.2.16, so that doesnt matter

This is likely a render state conflict between PlayerAnimator and Doctor Who.

Better Combat has no code related to this, that could be modified to fix this.

i have the same issue. I do not use the Dr Who mod.