Does Xamarin.Forms.Maps V2 work on Android 6 Devices

I have a Nexus 9 Tablet running Android 6.

It is fully up to date and I am using the most recent stable Xamarin.Forms.Maps nuget (V2)

But I am not seeing any map?

I get a blank grey patch where the map tiles should be. The exact same application is running fine on all other Android 5 devices I have displaying the map as expected.

Is this a bug?

Has any one else tested the Xamarin.Forms.Maps V2 on an Android 6 device?