Ember JS Getting Started - Screen Flicker

I'm currently going through the getting started guide of Ember 2.13.

I've gotten up to the step of adding my first route: the /scientists route. I'm concerned because when I go to that URL, the screen flickers, something I didn't expect should be happening at all with such a basic SPA.

I've added a link here, showcasing the flickering when changing the URLs.

Is there something I'm misunderstanding about repainting in Chrome? Because in Safari it seems to work fine. But I tend to believe that this is because of some Safari optimization rather than Ember doing it's job in Safari and not Chrome.

I'm using the ember serve command. It also said that watchman was not installed but since that's just for discovering file changes, I figured it wouldn't impact this.