Currently, it is possible to create a Resource within a Style, stored in the Style itself.

However, after restarting Studio, the Resource appears to disappear completely from within the Styles Resources manifest.
It continues to display as if the Resource still existed but:

• The Resource is no longer visible in the Resources Panel
• The Resource no longer displays in the Property using it.

See attached video.

Repro Steps:

1) Create a Studio Project featuring a MainPage.xaml

2) Introduce a 512x512 Button to the Page, right-click on it, and from the context menu navigate to 'Style' --> 'Create'.
This will open the Style in the Inline Style Dummy Editor.

3) Within the Style Dummy Inline Editor, change the value of any Property (Foreground works well).

4) After the value has been changed, hover over the Property in question, and from its 3-Dot menu appearing on hover, select 'Convert to Resource'.

5) In the popup that appears, give the Resource a memorable name, and elect to save it inside of the STYLE's Resources.

6) Navigate to the Resources Panel, and select the 'Style' header from the top of the Panel.

Observe how the Resource created in Step 4) and 5) appears in the Style.

7) Save all open documents, and restart Studio.

8) Right-click on the Button, and navigate back into the Style via 'Style'-->'Edit'.
This will open the Style in the Inline Style Dummy Editor.

9) With the Style open for edit, navigate back to the Resources Panel, and select the Style header just as was done in Step 6).

Observe how the Resource no longer exists in its listing.

10) Identify the Property within the Style's Properties Panels that the Resource was created from (eg the 'Foreground' Property).
Observe how the Property and its value are adorned in green, showing that it is a Resource value.
Observe that the Property is correctly showing the correct value of the Resource created in Steps 3) to 5).

11) Open the expander directly to the left of the Property's name.
Observe how the value selector dropdown is showing blank, and that opening the dropdown produces an empty list.

Expected Results: Resources created within a Style are visible within Studio after reboot.