[iOS 15] CollectionView with CollectionViewHandler2 configured, is crashing app on iOS 15 (15.2)

[vitalbit]

Description

iOS 15 and iOS 15.2 (tested only those versions) make application crash when rendering CollectionView with CollectionViewHandler2 configured. Meanwhile iOS 17 and iOS 18 works fine.

Steps to Reproduce

1. Configure CollectionView with CollectionViewHandler2 in MauiProgram.cs.
2. Use CollectionView on MainPage and try to add some items into ItemsSource.

Actual result: application is failed to start for iOS 15/15.2.
Expected result: application works fine like on iOS 17/18.

Please check reproduction repository with iOS 15.2 simulator run.

Link to public reproduction project repository

https://github.com/vitalbit/CollectionViewHandler2_IOS15_Sample

Version with bug

9.0.21 SR2.1

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

iOS 15, iOS 15.2

Did you find any workaround?

Nope :(

Relevant log output

Microsoft.Maui.Controls.Handlers.Items2.ItemsViewController2<Microsoft.Maui.Controls.ReorderableItemsView>.CheckForEmptySource (Unknown Source:0)
Microsoft.Maui.Controls.Handlers.Items2.ItemsViewController2<Microsoft.Maui.Controls.ReorderableItemsView>.NumberOfSections (Unknown Source:0)
ObjCRuntime.Messaging.void_objc_msgSendSuper (Unknown Source:0)
UIKit.UIViewController.LoadView (UIViewController.g.cs:691)
Microsoft.Maui.Controls.Handlers.Items2.ItemsViewController2<Microsoft.Maui.Controls.ReorderableItemsView>.LoadView (Unknown Source:0)
ObjCRuntime.Messaging.NativeHandle_objc_msgSendSuper (Unknown Source:0)
UIKit.UIViewController.get_View (UIViewController.g.cs:3275)
Microsoft.Maui.Controls.Handlers.Items2.ItemsViewHandler2<Microsoft.Maui.Controls.ReorderableItemsView>.CreatePlatformView (Unknown Source:0)
Microsoft.Maui.Handlers.ViewHandler<Microsoft.Maui.Controls.ReorderableItemsView,UIKit.UIView>.OnCreatePlatformView (Unknown Source:0)
Microsoft.Maui.Controls.Handlers.Items2.ItemsViewHandler2<Microsoft.Maui.Controls.ReorderableItemsView>.OnCreatePlatformView (Unknown Source:0)
Microsoft.Maui.Handlers.ViewHandler.OnCreatePlatformElement (Unknown Source:0)
Microsoft.Maui.Handlers.ElementHandler.CreatePlatformElement (Unknown Source:0)
Microsoft.Maui.Handlers.ElementHandler.SetVirtualView (Unknown Source:0)
Microsoft.Maui.Handlers.ViewHandler<Microsoft.Maui.Controls.ReorderableItemsView,UIKit.UIView>.SetVirtualView (Unknown Source:0)
Microsoft.Maui.Handlers.ViewHandler<Microsoft.Maui.Controls.ReorderableItemsView,UIKit.UIView>.SetVirtualView (Unknown Source:0)
Microsoft.Maui.Controls.Element.SetHandler (Unknown Source:0)
Microsoft.Maui.Controls.Element.set_Handler (Unknown Source:0)
Microsoft.Maui.Controls.VisualElement.Microsoft.Maui.IElement.set_Handler (Unknown Source:0)
Microsoft.Maui.Platform.ElementExtensions.ToHandler (Unknown Source:0)
Microsoft.Maui.Platform.ElementExtensions.ToPlatform (Unknown Source:0)

[Ying-6]

This issue has been verified using Visual Studio 17.13.0 Preview 2.1 (9.0.22 &9.0.21 & 9.0.14). Can repro on iOS 15.2, and not repro on iOS 18.2.

[dhindrik]

We also have this issue with iOS 16.x devices.