Update viewer.js

viewer.js

@@ -115,8 +115,9 @@ export async function initializeViewer(config, instanceId) {
 
   const opts = new pc.AppOptions();
   opts.graphicsDevice = device;
-  opts.mouse = new pc.Mouse(canvas);
-  opts.touch = new pc.TouchDevice(canvas);
+  // Attach input to document.body (not canvas) for iOS, to match PlayCanvas example and fix iOS event issues
+  opts.mouse = new pc.Mouse(document.body);
+  opts.touch = new pc.TouchDevice(document.body);
   opts.componentSystems = [
     pc.RenderComponentSystem,
     pc.CameraComponentSystem,