Fixed #3117

.vscode/tasks.json

@@ -26,7 +26,7 @@
                     "code": 4,
                     "message": 5
                 },
-                "watching": {
+                "background": {
                     "activeOnStart": true,
                     "beginsPattern": "Starting \\'watch\\'",
                     "endsPattern": "Finished \\'run\\'"

Viewer/dist/viewer.js

@@ -78315,6 +78315,7 @@ var AbstractViewer = (function () {
         }
         var config = this.configuration.engine || {};
         this.engine = new babylonjs_1.Engine(canvasElement, !!config.antialiasing);
+        babylonjs_1.Database.IDBStorageEnabled = false;
         window.addEventListener('resize', function () {
             _this.engine.resize();
         });

Viewer/src/viewer/viewer.ts

@@ -1,7 +1,7 @@
 import { viewerManager } from './viewerManager';
 import { TemplateManager } from './../templateManager';
 import configurationLoader from './../configuration/loader';
-import { Observable, Engine, Scene, ArcRotateCamera, Vector3, SceneLoader, AbstractMesh, Mesh, HemisphericLight } from 'babylonjs';
+import { Observable, Engine, Scene, ArcRotateCamera, Vector3, SceneLoader, AbstractMesh, Mesh, HemisphericLight, Database } from 'babylonjs';
 import { ViewerConfiguration } from '../configuration/configuration';
 import { PromiseObservable } from '../util/promiseObservable';
 
@@ -106,6 +106,9 @@ export abstract class AbstractViewer {
         // TDO enable further configuration
         this.engine = new Engine(canvasElement, !!config.antialiasing);
 
+        // Disable manifest checking
+        Database.IDBStorageEnabled = false;
+
         window.addEventListener('resize', () => {
             this.engine.resize();
         });