Chrome Version: 70.0.3538.110
OS: Android 9, Security patch Nov 18

What steps will reproduce the problem?
(1) Install a PWA, e.g. moma.corp.google.com
(2) Click on a search result link.
(3) Link opens in the PWA.

What is the expected result?

It should open in the Chrome Browser, since our manifest does not contain a "scope" field. Per chrome documentation, this means that all URLs on other domains should open in a new chrome window: https://developers.google.com/web/fundamentals/web-app-manifest/#scope

What happens instead?

It opens in the PWA.