I already mentioned it once (or maybe not, I don't remember) that animated normal maps work "specially"

IF:

TEXTURE_OPTIMIZATIONS=true, pbr texture pack on

TEXTURE_OPTIMIZATIONS=false, pbr texture pack on

TEXTURE_OPTIMIZATIONS=true, normals removed from texture pack

explanation

Here is a normal map comparison of a sea lantern and sand (this is just an example, you can take any other blocks), here you can see that the sea lantern has an animated normal map, and this problem applies to any block that has an animated normal map

block with animated normal map

simple block normal map

Can you give me a link to this resource pack? I need to test this locally to fix it.

§5AVPBR custom.zip

And also need to install et futurum requiem for sea lantern or magma block i guess

I tried fixing it, but it's not feasible and would require a full rewrite of the texture optimization logic. Added a note to the readme about it.