Question Shader disappears at certain distance

I'm creating a space game with vast distances between planets and I've got an issue with one planet shader.

I'm using the Forge3d planets package and the shader seems to disappear after a certain distances as evidenced in the video link.

Things I've tried:
1. There are other planets/objects in scene with different shaders that all don't have this issue.
2. It's not a camera distance culling issue.
3. It's not a mesh issue.
4. Applying shader to other planets that work end with the same result.

I have a suspicion that it's some form of shader graph optimisation, but I'm not a shader guy so I have no idea how to fix it.

Any advice would be greatly appreciated.

 

Contact the creator of the package.
You aren't allowed to share the shader graph, so we cannot help much. This seems to be more intense than a mipmap issue, so probably something in the graph or with the settings relevant to the setup