[windows] MauiNavigationView Crashing on applytemplate

[rmarinho]

Description

The net10 branch is failing in a lot windows tests after moving to preview5.

Some errors seem to be crashing with an NRE on MauiNavigationView .

Steps to Reproduce

1. Checkout net10
2. Run the UItest host app
3. Go CollectionView tests

Link to public reproduction project repository

No response

Version with bug

10.0.0-preview.5 (net10.0 branch)

Is this a regression from previous behavior?

Yes, this used to work in .NET MAUI

Last version that worked well

10.0.0-preview.4

Affected platforms

Windows

Affected platform versions

No response

Did you find any workaround?

No response

Relevant log output

   at ABI.System.Nullable_IntEnum.Do_Abi_get_Value_0(IntPtr thisPtr, Int32* __return_value__)
--- End of stack trace from previous location ---
   at WinRT.ExceptionHelpers.<ThrowExceptionForHR>g__Throw|38_0(Int32 hr)
   at ABI.Microsoft.UI.Xaml.IFrameworkElementOverridesMethods.OnApplyTemplate(IObjectReference _obj)
   at Microsoft.UI.Xaml.FrameworkElement.OnApplyTemplate()
   at Microsoft.Maui.Platform.MauiNavigationView.OnApplyTemplate() in C:\repos\dotnet\maui\src\Core\src\Platform\Windows\MauiNavigationView.cs:line 69
   at Microsoft.UI.Xaml.FrameworkElement.Microsoft.UI.Xaml.IFrameworkElementOverrides.OnApplyTemplate()
   at ABI.Microsoft.UI.Xaml.IFrameworkElementOverrides.Do_Abi_OnApplyTemplate_2(IntPtr thisPtr)
--- End of stack trace from previous location ---
   at WinRT.ExceptionHelpers.<ThrowExceptionForHR>g__Throw|38_0(Int32 hr)
   at ABI.Microsoft.UI.Xaml.IFrameworkElementOverridesMethods.MeasureOverride(IObjectReference _obj, Size availableSize)
   at Microsoft.UI.Xaml.FrameworkElement.MeasureOverride(Size availableSize)
   at Microsoft.UI.Xaml.FrameworkElement.Microsoft.UI.Xaml.IFrameworkElementOverrides.MeasureOverride(Size availableSize)
   at ABI.Microsoft.UI.Xaml.IFrameworkElementOverrides.Do_Abi_MeasureOverride_0(IntPtr thisPtr, Size availableSize, Size* result)

[mattleibow]

Not sure if it is related, but my dev box is fine most of the time and the crashes seem to be different. I do get the OP crash as well, but it is consistent locally and rare on the devbox.

[mattleibow]

More info: Seems Holder is null

[mattleibow]

May be a dupe of this: dotnet/runtime#115881
Possible fix: dotnet/runtime#115921

[mattleibow]

The runtime has fixed the issue. Yay. Go team!