InstancedBuffers not working with cloned mesh

This PG of Blender icosphere instances works with instanced buffers:

This one does not because I’m cloning the icosphere:

I wonder if this is because the model is from an older version of blender / exporter.

Same issue with latest version of blender / exporter:

You will need to call box.makeGeometryUnique() before being able to create instances from a cloned mesh:

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