[iOS] CollectionView item sizing wrong after refresh

[naaeef]

Description

On iOS, after refreshing a CollectionView in a RefreshView, items are not sized correctly. After scrolling down and up, it is displayed correctly.

CollectionView.Error.mov

This issue is currently blocking us from migrating to MAUI.

Steps to Reproduce

1. Create a new MAUI app
2. Add a RefreshView and and CollectionView
3. Use a DataTemplateSelector with two DataTemplates having different heights
4. Run the app on iOS, refresh the CollectionView

Link to public reproduction project repository

https://github.com/naaeef/CollectionViewReproductionSample

Version with bug

8.0.6

Is this a regression from previous behavior?

Yes, this used to work in Xamarin.Forms

Last version that worked well

Unknown/Other

Affected platforms

iOS

Affected platform versions

No response

Did you find any workaround?

No.

Relevant log output

No response

[PureWeen]

Related #15177

[ghost]

We've added this issue to our backlog, and we will work to address it as time and resources allow. If you have any additional information or questions about this issue, please leave a comment. For additional info about issue management, please read our Triage Process.

[XamlTest]

Verified this on VS 17.10.0 Preview 2.0(8.0.7 and 8.0.10). Repro on iOS 17.2 with below Project:
TestCollectionView.zip

[rmarinho]

This seems fixed on net9 using CV2 I added a test here manually for now but seems to work correctly @naaeef do you mind pull my branch and try to see validate is fixed?