Background
Including the StoryViewer in the navigation stack means it can be closed with the browser back button, among other things.
Consider this example
- Go to Wikipedia Cat article
- Click on a link inside the article to go to the Lion article
- The Lion article has stories. Click on a story to open the viewer
- Click the browser back button
- The viewer closes and you stay on the Lion article (because it is included in the browser navigation stack) OR
- You go back to the Cat article (it is indeed the previous page from the browser's perspective and the viewer being just a popup is not part of the navigation stack)
If we go with option A, there are more questions about whether viewing several stories represent several navigation entries or the same one.
Decision
Based on our discussion, we are going ahead with the option A as its possible readers might be interested to learn more about the article after going through stories, media viewer also has a similar behavior on our platforms. Viewing several stories can represent same navigation so click on back button from any story would lead to the article.