Decal Shader looks weird on surface when using a normal map

Hi!

Uh, so, I really don't know what's the issue here, I'm not sure if it's expected behavior, but the problem is that the Decal Shader is producing some weird artifacts as you can see on the image below:

View attachment 1038962

I tried with both Decal Projector and a quad game object.

I thought it might be the normal texture itself, but the documentation never mentions anything regarding any required configuration or settings for the normal map. In fact, they used two different...

Decal Shader looks weird on surface when using a normal map