Transparent shader only shows color on one side

Hi

I have a simple transparent shader that puts the scene colour into the emission channel:

My mesh is just 2 flat planes and the normals for both planes point outwards - yet for some reason only one of the planes shows the base colour and the other does not. See here:

I set the base color to red. Why does it not show on one of the sides?

This is what my mesh looks like in blender with normals showing:

Can you try to put the render sides to both in the shader graph settings? Otherwise if it’s a plane it won’t be double sided