Rendering order problem between transparent objects

[rustui]

There is a long gray bar placed horizontally, which is imported from the glb file. The top part of it is opaque and the bottom part is transparent.

There is also a vertical transparent white object, I generated its vertex position data and set only its Mesh::ATTRIBUTE_POSITION. its material is StandardMaterial, unlit is set to true and alpha_mode is set to AlphaMode::Blend.

You can see that the overlapping parts of this two objects are rendered using the incorrect front-to-back order.
I don't know how to fix this problem, can anyone give me some help?

[rustui]

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