Sample Regions Demo throws exception when Content is added to ContentControl. Complains about ContentControl region adapter not there

[stevensrf11]

Is anyone getting this issue with the latest sample of the PRISM.
I downloaded the Sample Prism source code.
In Sample 2 Regions demo I add some Content to the Content Control.
ContentControl prism:RegionManager.RegionName="ContentRegion" Content="Shell Content"
When I ran the demo in Visual Studio 2019 an exception was thrown complaining about ContentController not having a region adapter created for it.
The Prism Version is prism.unity 8.0.0.1909

02-Regions.zip

[brianlagunas]

See #2389