Context Menu Text Highlighting Doesn't Update with Theme Change

[Zakariathr22]

Description

When changing the app theme from Light to Dark (or vice versa), the text highlighting in the context menu does not update correctly. It appears that the context menu text uses static resources, causing it to retain the previous theme's colors until the app is restarted.

Steps to Reproduce

1. Clone the repository.
2. Switch to and run the main branch.
3. Go to Settings and change the theme (e.g., from Light to Dark or Dark to Light).
4. Navigate to any component where you can write or select text (e.g., RichTextBox).
5. Right-click to open the context menu and observe the text highlighting.

Expected Behavior

The text in the context menu should correctly update to match the selected theme.

Actual Behavior

The context menu text appears to use static resources, preventing it from updating dynamically when the theme changes.

Screenshots

Additional Context

• This issue does not appear in version 2.5.1 but is present in the main branch.
• It may be related to the WindowsAppSDK version update (Update WinAppSDK Version and Remove WebView2 Workaround #1729).

[marcelwgn]

I was able to repro this using the store version which is 2.5.1. 🤔

[Zakariathr22]

I reverted the changes from #1729, but the issue still happens in the main branch, so it’s not related to the WinAppSDK version. However, I can't reproduce the issue in the store version (2.5.1). 🤔

[Jay-o-Way]

Whatever the actual cause is, I think it's safe to say this is an issue for the WinUI/XAML repo? As far as i can tell (with a quick search) the TextControlCommandBarContextFlyout cannot be changed.

[Zakariathr22]

Can we consider this as an external-bug?