[CV2][CollectionView] Changing CollectionView's ItemsSource in runtime removes elements' parent seemingly random

[Vetle444]

Description

The elements in a CollectionView that uses CollectionViewHandler2 will get its parent removed if the ItemsSource changes. Thus, Source bindings is not usable anymore.

Steps to Reproduce

1. Clone https://github.com/Vetle444/MauiTestApp/tree/collectionView2ParentBug/MauiTestApp
2. Make sure you are on branch: collectionView2ParentBug
3. Run app
4. Click Bug button
5. Click the Reverse button, observe that the Parent of some elements will get nullified.

Link to public reproduction project repository

https://github.com/Vetle444/MauiTestApp/tree/collectionView2ParentBug/MauiTestApp

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

iOS

Affected platform versions

No response

Did you find any workaround?

protected override void OnParentChanged()
{
    base.OnParentChanged();

    if (Parent is not null)
    {
        m_parent = Parent;
    }
    
    Parent = m_parent;
}

Relevant log output

[TamilarasanSF4853]

This issue has been verified in Visual Studio Code (1.100.1) with MAUI versions (9.0.0 & 9.0.70). It can be reproduced on iOS(CV2) platform.
Note: Issue does not reproduced on CV1