Capping extruded shape not working?

Hello @Evgeni_Popov, I have one last issue with the ExtrudeShape version of the card and this is concerning UVs.

As you can see in this playground

I put side by side the ExtrudeShape and ExtrudePolygon versions using the same PBRMaterial.
I want my albedo texture to be only on the front of the Card which is what I have with the ExtrudePolygon but not with ExtrudeShape as it also appears above the Card.

I tried to play with different face UV but nothing has worked so far.
How could I correct that ?