Any recipe for a URP "Normals-Only" Decal SG? No Base Color. Is it bugged?

I mean, this is what you want correct?
9582655--1357021--GIF 15.01.2024 14-55-21.gif

I am changing material alpha property here. My setup:

9582655--1357024--upload_2024-1-15_14-56-36.png

// Edit: Are you casting decal on standard lit shader surface?