1. Ensure that argv.json doesn't have a locale key-value pair.
2. Ensure the VS Code Spanish language pack isn't already installed.
3. Set macOS to use the Español (Latinoamérica) language.
4. Open VS Code.
5. 🐛 VS Code isn't in Spanish.

If one repeats the steps with Français (Canada) or Português (Brasil), VS Code starts up in French and Portuguese, respectively. With Español (Latinoamérica), app.getLocale() returns es-419, and the extra country code confuses the recommender.

I plan on fixing this issue as part of the getSystemLocale PR.

CC @TylerLeonhardt