I tried to display the Rigged Simple glTF model with the latest version of Three.js + glTF Loader, but I noticed that it was no longer animated.
https://cx20.github.io/gltf-test/examples/threejs/index.html?model=RiggedSimple&scale=0.2
The following error is displayed on the console.
three.js:36368
can not bind to objectName of node, undefined
PropertyBinding
getValue: ()
node: Bone
parsedPath: Object
path: "Bone.001.scale"
rootNode: Scene
setValue: ()
__proto__: Object
bind @ three.js:36368
:
This model has to animate as follows.

Three.js r82 + glTF Loader is OK
http://jsdo.it/cx20/gnom
Three.js r83 + glTF Loader is NG
http://jsdo.it/cx20/KyIp
Probably it isn't glTF specific issue, but Three.js animation system issue #10366
This issue is now fixed.
Most helpful comment
This issue is now fixed.