Tested on 2.7.50337-alpha-2021-01-19

Steps:

1. Navigate to an article that exists in multiple languages
2. Change the article to a language that is not selected in the app settings (For example: View the article in Portuguese when Portuguese is not selected in app language settings)
3. Add the article to the watchlist
4. Navigate to the main watchlist screen
5. Attempt to view the article

Expected Result:
Not sure... Assuming that the article language, in this case, is displayed in the language chooser on the watchlist screen

Actual Result:
The user cannot select the unset language on the watchlist screen and therefore the user cannot see it.

Frequnecy = 5/5 times