I remember it used to work just fine but seems not to anymore for some reason

Expected Behavior

Entity and arms to render in first person

Actual Behavior

They do not

Steps to Reproduce

Use better first person
Pick up an entity

Version of Minecraft, Carry On, Forge/Fabric

1.18.2 forge
also have better first person

Edit: it is working in another modpack I made, so it must be due to an incompatibility