Subdivision issue?

[bleak river]

I tried export this simple mesh model to blender and perform subdivision.

See ss below, left is gltf, right is obj.
I wonder if this is a gltf format general issue or blockbench export format issue?

[undone nebula]

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[stoic veldt]

glTF doesn't support shared vertices (shared between different faces). The format is mainly designed for final export and displaying. If you want to continue editing in Blender, I would recommend exporting as .dae

(Or just OBJ if you don't need hierarchy etc.)

[bleak river]

👍