Gradient Material issues with imported mesh from blender

I have 2 boxes in my scenes:
the top one was imported from Blender. And the bottom was created with MeshBuilder.CreateBox.
Then I applied the same gradient material (BABYLON.GradientMaterial) to both of them.
My issue is the gradient on the box imported from Blender looks weird.
Any idea why ?

Hello can you share it on the playground?

Thank you.

Seems like the box created in blender has some weird values for positions.

Can you share the blender file? Adding @Vinc3r (108.4 KB)

I don’t see issue on your blender mesh.
I’ve never used the gradient material, but I suppose it doesn’t use UV but mesh bouding box? If so, just use one material per mesh instead of sharing it: