glb mesh disappears on rotation threejs - three.js

Question

I've dug around looking for a solve for this - but couldn't find the answer on here. I have a gltf/glb model loading into three js as such:
createScene: function() {
this.renderer = new Three.WebGLRenderer({
antialias: true,
alpha: true
});
let container = document.getElementById('container');
this.renderer.setSize(container.clientWidth, container.clientHeight);
this.renderer.setPixelRatio(window.devicePixelRatio);
this.renderer.setClearColor(new Three.Color('#fff'));
this.renderer.setClearAlpha( 0 );
//this.render.shadowMap.type = Three.PCFSoftShadowMap;
container.appendChild(this.renderer.domElement);
},
createCamera: function() {
this.camera = new Three.PerspectiveCamera(6, container.clientWidth/container.clientHeight, 1, 1000);
this.camera.position.set(0, 0, 40);
},
createShape: function() {
let me = this;
const loader = new GLTFLoader();
loader.load( 'model/fbf3.glb', function ( gltf ) {
me.bottle = gltf.scene
me.scene.add( gltf.scene );
gltf.scene.traverse(function(obj) { obj.frustumCulled = false; });
me.pivot = new Three.Group();
me.pivot.position.set( 0.0, 0.0, 0 );
me.bottle.add( me.pivot );
console.log(gltf.scene);
console.log(gltf.scene.children[1]);
//me.pivot.add( me.bottle );
me.animate();
}, undefined, function ( error ) {
console.error( error );
});
},
I found a post that said to loop through the scene and be sure to add frustumCulled to false - so that's added in ( and when I log the child, that objects frustumCulled is set to false ). In order to have a label on my object easy to map and also take on a different material/glossiness i've created another object in the group that is just slightly in front of my other object on the yaxis. When it is facing the camera, it works well - however, it is when the object rotates is where it disappears. Working:
Rotate enough, and gone:
Is there a setting in threejs that I need to add to be sure the render order is correct? Or is it something wrong with my object set up in Blender? Ideally I wouldn't have to UV wrap the whole bottle as one object and add the label to the bottle texture because I want the label to have less specularity ( that a word? ). Any help would be appreciated.

Answer 1

Solved - the tutorial is slightly old ( 2+years ) and now Blender ( the latest version 2.9+ ) has the Principled BSDF Shader baked in. Instead of using the glTF-Blender-Exporter-Master pbr appended shaders from the listed tutorial - I instead used the Principled BSDF Shader - linked my material to it's Base Color and linked that to the Material Output ( all in the node/now Shader Editor. No issues anymore.