TargetDeviceFamily=Windows.Desktop causes BladeView resource load exception

[bent-rasmussen]

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Bug report (I searched for similar issues and did not find one)

Current behavior

The application crashes with a resource load exception.

Expected behavior

The application does not crash.

Context

Using the BladeView in an enterprise-targetted application with real-time streaming that does not suspend streaming when the user minimizes the window. Inspired by this MVP article:

https://blogs.msdn.microsoft.com/mvpawardprogram/2018/01/30/non-suspending-uwp-desktop-apps/

Minimal reproduction of the problem with instructions

Minimal reproduction of issue in this repository:

https://github.com/observito/WindowsDesktopBladeViewError

Steps to reproduce:

• Change TargetDeviceFamily to Windows.Desktop in the Package.appxmanifest file
• Add a BladeView control with a single BladeItem in the MainPage.xaml file

Environment

Nuget Package(s): 

Microsoft.NETCore.UniversalWindowsPlatform (6.2.7)
Microsoft.Toolkit.Uwp.UI.Controls (5.1.1)

Windows 10 Build Number:
- [ ] Fall Creators Update (16299)
- [ ] April 2018 Update (17134)
- [X] October 2018 Update (17763)
- [ ] Insider Build (build number: )

App min and target version:
- [ ] Fall Creators Update (16299)
- [ ] April 2018 Update (17134)
- [X] October 2018 Update (17763)
- [ ] Insider Build (xxxxx)

Device form factor:
- [X] Desktop
- [ ] Mobile
- [ ] Xbox
- [ ] Surface Hub
- [ ] IoT

Visual Studio 
- [X] 2017 Professional (version: 15.9.10+28307.557)
- [ ] 2017 Preview (version: )