Have trouble loading node material in the sandbox

Hey there, I am encountering a problem when linking a node material to an object. I’m using a PBRMetallicRoughness block and it works nice in both the editor and the sandbox. However when I export the object in babylon format and then re-open it in the sandbox, I have to refresh the textures in the nme. Otherwise I get that Capture
instead of a little moon Capture2

Am I doing it wrong or is it a bug ?

Also tried to export in .glb to see what happens but the texture doesn’t even appear.

Could you setup a PG so that we can have a look more easily?

Yeah sure, here it is
PG : Babylon.js Playground
Node material : Babylon.js Node Material Editor