[Windows] SearchBar PlaceholderColor and BackgroundColor not updating at runtime

[Tamilarasan-Paranthaman]

Description

When modifying the PlaceholderColor or BackgroundColor properties of a SearchBar at runtime on the Windows platform, the visual changes are not reflected in the UI.

public class MainPage : ContentPage
{
	public MainPage()
	{
		var searchBar = new SearchBar
		{
			Placeholder = "Search here...",
			BackgroundColor = Colors.Black,
			PlaceholderColor = Colors.Yellow,
			HeightRequest = 50,
		};
		var button = new Button
		{
			Text = "Change PlaceHolder and Background Color",
			VerticalOptions = LayoutOptions.Center,
			HorizontalOptions = LayoutOptions.Center,
			AutomationId = "ColorChangeButton"
		};
		button.Clicked += (sender, e) =>
		{
			searchBar.BackgroundColor = Colors.YellowGreen;
			searchBar.PlaceholderColor = Colors.Red;
		};

		Content = new StackLayout
		{
			Children =
			{
				searchBar,
				button
			}
		};
	}
}

Steps to Reproduce

1. Create a SearchBar in XAML or C#.
2. In a button click, update the PlaceholderColor or BackgroundColor of the SearchBar.
3. Observe that no visual change occurs on the Windows platform.

Link to public reproduction project repository

No response

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 response

Relevant log output