I'm using ArcGIS Runtime SDK for .NET (10.2.7) to develop an App in Visual Studio 2013.
I've installed the App in a device (tablet) wich uses Windows 8.1 as its OS. When i start the App the map looks fine but if I dont use the device for about an hour or more and then log in (nessesary becouse device is in sleepmode) the map doesnt show. All I see is blank tiles and the map does not reload. So I have to shut down the App and open it again to see the map.
I've appended the project.