Question Identical Shader Graph Previews differently in different projects.

Unity version 2019.3.2f1
macOS 10.15.3

I have two projects using the same rendering pipeline with the same settings in the pipeline (Lightweight Rendering Pipeline). They also have identical settings in 'Project Settings... -> Graphics'.

If I create a new PBR Graph shader in both projects, they show up very differently in the graph editor preview.

One project was upgrade from 2018.4.17f1 is the only thing I can see that is different. I have methodically gone through every setting I can find that could possibly impact this and I can't see anything that would cause this.

It's driving me nuts. Take a look a the attached screen shot. The left side is a PBR Graph in the upgraded project and the right side is the same one in the new project. Even if I just drag and drop the graph from the old to the new it doesn't look the same in the new project.

Is there some setting that controls the lighting in the graph editor preview or something?