Xamarin.Forms.Image not picking up a remote image on iOS

The following code works as expected on Android, but on iOS, the image doesn't appear.

var videoImage = new Image { Source = video.Pictures[0].Link, Aspect = Aspect.AspectFill };

Attached is a screenshot of the breakpoint. Is this a known issue? Is there an existing workaround?

There is no debug info to follow up with.