HDRP Decals normals

I have noticed that the normals from the underlying material still comes through the decals even when the opacity and fade of the decal are set to 1 (2020.1.6f1 and previous versions). I have not noticed this problem for the albedo but it could just be that it s less noticeable.
Is there some way to get the decal to fully override the underlying materials normal?

 

Just add a blank normal map on your decal material, this will fix the issue

 

Thanks for the suggestion but I am not sure I understand what you are suggesting. Do you mean remove the normal map from
the decal? That doesn't stop the normals from the background coming through and it just means the decal does nothave any normals. That is the opposite of what I want to achieve.

 

If you have a normal map on decal, and opacity is set to 1, the normal map from material in background is not supposed to show. It must be a bug...