The diffuse color of glTF model BrainStem.glb is not displayed.

Description of the problem

I tried the latest version of Three.js + glTF Loader, which supports the .glb format.

However, the diffuse color of glTF model BrainStem.glb was not displayed.
https://cx20.github.io/gltf-test/examples/threejs/index.html?category=sampleModels&model=BrainStem&scale=1&type=glTF-Binary

The diffuse color of glTF model BrainStem.gltf is displayed.
https://cx20.github.io/gltf-test/examples/threejs/index.html?category=sampleModels&model=BrainStem&scale=1&type=glTF

Since it can be displayed with Babylon.js and other libraries, I think that it is a problem of Three.js + glTF Loader.

Three.js version

• Dev
• r82
• …

Browser

• All of them
• Chrome
• Firefox
• Internet Explorer

OS

• All of them
• Windows
• Linux
• Android
• IOS

Hardware Requirements (graphics card, VR Device, …)