Embedded apps never work

[rmorrise]

Whenever I see a Stackblitz example embedded in a blog or article, the embedded app never works.

The preview embedded in the article is always blank.

When I edit and open in a new window, the window hangs indefinitely with a loading indicator. In the console I eventually see this message:
Service Worker termination by a timeout timer was canceled because DevTools is attached.

An example I was just reading: https://stackblitz.com/edit/adv-ng-patterns-06-use-template-refs?file=app%2Fapp.component.html

I am on win64, Chrome Version 67.0.3396.79 (Official Build) (64-bit)

[apai4]

@rmorrise do you happen to have 3rd party cookies blocked? If so, see here for a potential solution: #162 (comment)

While we don't use 3rd party cookies for our preview domains on StackBlitz, some of the API's we use for passing data between windows/frames can fall under the same policy, which can cause the previews not to load.

[rmorrise]

Duplicate of #162