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[iOS] NRE after calling ViewCell.ForceUpdateSize #23092

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[iOS] NRE after calling ViewCell.ForceUpdateSize#23092
Labels
area-controls-listviewListView and TableViewfixed-in-8.0.61fixed-in-9.0.0-preview.6.24327.7i/regressionThis issue described a confirmed regression on a currently supported versionmigration-compatibilityXamarin.Forms to .NET MAUI Migration, Upgrade Assistant, Try-Convertp/0Current heighest priority issues that we are targeting for a release.platform/iost/bugSomething isn't working
Milestone
.NET 8 SR6
@VitalyKnyazev

Description

@VitalyKnyazev
VitalyKnyazev
opened on Jun 17, 2024

Description

A ListView with HasUnevenRows set to true causes NRE when view cell calls ForceUpdateSize to resize itself on iOS.
It seems to be caused by #22067 fix.

Steps to Reproduce

Launch sample project in iPhone simulator and click "Toggle description visibility" button.

Link to public reproduction project repository

https://github.com/VitalyKnyazev/MauiViewCellCrash

Version with bug

8.0.60 SR6

Is this a regression from previous behavior?

Yes, this used to work in .NET MAUI, Yes, this used to work in Xamarin.Forms

Last version that worked well

8.0.40 SR5

Affected platforms

iOS

Affected platform versions

iOS 17

Did you find any workaround?

No

Relevant log output

Object reference not set to an instance of an object.

   at Microsoft.Maui.Controls.Cell.OnForceUpdateSizeRequested()
   at System.Threading.Tasks.Task.<>c.<ThrowAsync>b__128_0(Object state)
   at Foundation.NSAsyncSynchronizationContextDispatcher.Apply() in /Users/builder/azdo/_work/1/s/xamarin-macios/src/Foundation/NSAction.cs:line 176
--- End of stack trace from previous location ---
   at ObjCRuntime.Runtime.ThrowException(IntPtr gchandle) in /Users/builder/azdo/_work/1/s/xamarin-macios/src/ObjCRuntime/Runtime.cs:line 2594
   at UIKit.UIApplication.UIApplicationMain(Int32 argc, String[] argv, IntPtr principalClassName, IntPtr delegateClassName) in /Users/builder/azdo/_work/1/s/xamarin-macios/src/UIKit/UIApplication.cs:line 60
   at UIKit.UIApplication.Main(String[] args, Type principalClass, Type delegateClass) in /Users/builder/azdo/_work/1/s/xamarin-macios/src/UIKit/UIApplication.cs:line 94
   at MoneyTracker.Universal.Maui.Program.Main(String[] args) in E:\Projects\Git\Working\MoneyTrackerPro\MoneyTracker.Universal.Maui\Platforms\iOS\Program.cs:line 12

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    area-controls-listviewListView and TableViewfixed-in-8.0.61fixed-in-9.0.0-preview.6.24327.7i/regressionThis issue described a confirmed regression on a currently supported versionmigration-compatibilityXamarin.Forms to .NET MAUI Migration, Upgrade Assistant, Try-Convertp/0Current heighest priority issues that we are targeting for a release.platform/iost/bugSomething isn't working

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