updating the example to properly demonstrate the issue

examples/webgl_loader_gltf_extensions.html

@@ -14,7 +14,7 @@
 			<div id="description"></div>
 		</div>
 
-		<div id="container"></div>
+		<div id="container" style="background-color: white;"></div>
 
 		<script type="module">
 
@@ -120,7 +120,7 @@
 					authorURL: 'https://www.agi.com/home',
 					cameraPos: new THREE.Vector3( 0, 3, 10 ),
 					addEnvMap: true,
-					extensions: [ 'glTF', 'glTF-Embedded', 'glTF-Binary', 'glTF-Draco' ]
+					extensions: [ 'glTF', 'glTF-Embedded', 'glTF-Binary' ]
 				},
 			};