[iOS, Mac] CollectionView Scrolled event reports incorrect FirstVisibleItemIndex after programmatic ScrollTo

[TamilarasanSF4853]

Description

When a CollectionView is scrolled programmatically using ScrollTo(index, position: ScrollToPosition.Start, animate: true), the Scrolled event ItemsViewScrolledEventArgs reports an incorrect value for FirstVisibleItemIndex on iOS and MacCatalyst. The reported FirstVisibleItemIndex does not match the index passed to ScrollTo, even after the scroll completes.

Android.mov

iOS.mov

Steps to Reproduce

1. Run the attached sample CollectionView.zip
2. Tap the "ScrollTo" button
3. Observe that the incorrect FirstVisibleItemIndex is shown.

Link to public reproduction project repository

No response

Version with bug

10.0.30

Is this a regression from previous behavior?

No, this is something new

Last version that worked well

Unknown/Other

Affected platforms

iOS, macOS

Affected platform versions

No response

Did you find any workaround?

No response

Relevant log output

[Ahamed-Ali]

This issue has been validated in Visual Studio Code 1.108.1 with MAUI versions 9.0.0, 9.0.120, 10.0.0 & 10.0.30. It can be reproducible on iOS and Mac platform.