[Windows] Shadow Size Not Updating Properly at Runtime

[JayashreeSF3546]

Description

When a shadow is applied to a .NET MAUI view on Windows, changing the view’s height or width at runtime causes the shadow size to update slowly. This results in a visible blinking or flickering effect around the view's shadow during resizing.

Steps to Reproduce

1. Run the attached sample
2. Click the button to change width and height
3. you can see shadow size updating slowly (blinking) after view size updated.

Link to public reproduction project repository

ShadowIssue.zip

shadow_issue_windows.mp4

Version with bug

9.0.70 SR7

Is this a regression from previous behavior?

No, this is something new

Last version that worked well

Unknown/Other

Affected platforms

Windows

Affected platform versions

No response

Did you find any workaround?

No

Relevant log output

[bronteq]

Maybe this could be helpful... #18337

[HarishKumarSF4517]

This issue has been verified in Visual Studio 17.14.4 Preview 1.0 for windows MAUI versions (8.0.100, 9.0.0, 9.0.50, _9.0.70). It can be reproduced on the Windows platform

[praveenkumarkarunanithi]

@jsuarezruiz I've verified that your PR #18337 successfully resolves this issue.

Before Fix:

After Fix: