Currently, if you have an Element selected in the Navigator, and you switch tabs to another open XAML document, by the time you return to the original document, the Element will be unselected.

This works contrary to how entering/exiting an Inline Template works, where memory of the selected Element on the Page is retained throughout scope changes.

Repro Steps:

1) Create a Studio Project featuring a MainPage.xaml and a Page2.xaml

2) Inside of MainPage.xaml, populate the root Grid with a selection of assorted Elements. Ideally, some of these are children to layers of nested Layout/Panel Elements.

3) Within the Elements introduce to the Page, make one of them a Button Element.

4) Select the Button Element introduced in Step 3), and create a new Template for it, save anywhere, and with any Resource name.
This will open the Button Template inside of the Inline Dummy Template Editor.

5) Make any changes to any of the Elements within the Button Template, then exit the Template via the 'exit Template' 'Home' button in the upper-right of the Stage.

Observe how the selected Element in the Navigator is still the Button selected in Step 3).

6) Without changing Element selection in the Navigator, and without closing MainPage.xaml, open Page2.xaml.
This will open Page2.xaml in a new document tab at the top of the application window.

7) Select on MainPage.xaml's tab to return to it.

Observe how the Button selected between Step 3) and Step 7) has been deselected.

Expected Results: Changing document tabs doesn't lose memory of the last-selected Element in open documents.