Repro Steps:

1) Open the Squad Sample, and take a moment to carefully observe the contents of the page, as well as the contents of the Navigator.
2) Close the MainPage.xaml tab that's automatically opened on project launch
3) Navigate to the Resources Panel, and select GlobalResources.xaml to expose its contents.
4) Rename each of the Colour swatches present to any other name that you desire. The new names for the 12 colours can be whatever you want, as long as they are not the original names from when the file was opened.
5) Navigate to the Asset Panel, and open MainPage.xaml

Observe how the entire interface is broken and failing to display any content on the Stage.
Observe how elements that were previously-present in the Navigator, are no longer present.

Expected Results: Renaming Resources in the Resources Panel does not adversely affect the display of the contents of a Page.