ObjectDisposedException for Android ContentViewGroup when closing page (since 9.0.40)

[markusksofa]

Description

When closing a page and returning to the previous page in the navigation stack (NavigationPage), the Android App sometimes crashes with the following fatal exception:

System.ObjectDisposedException: Cannot access a disposed object.
Object name: 'Microsoft.Maui.Platform.ContentViewGroup'.
   at Java.Interop.JniPeerMembers.AssertSelf(IJavaPeerable self)
   at Java.Interop.JniPeerMembers.JniInstanceMethods.InvokeVirtualVoidMethod(String encodedMember, IJavaPeerable self, JniArgumentValue* parameters)
   at Android.Views.View.RemoveOnAttachStateChangeListener(IOnAttachStateChangeListener listener)
   at Android.Views.View.<>c__DisplayClass3033_0.<remove_ViewDetachedFromWindow>b__0(IOnAttachStateChangeListener __v)
   at Java.Interop.EventHelper.RemoveEventHandler[IOnAttachStateChangeListener,IOnAttachStateChangeListenerImplementor](WeakReference& implementor, Func`2 empty, Action`1 unsetListener, Action`1 remove)
   at Android.Views.View.remove_ViewDetachedFromWindow(EventHandler`1 value)
   at Microsoft.Maui.Platform.ViewExtensions.<>c__DisplayClass43_0.<OnUnloaded>b__1()
   at Microsoft.Maui.Platform.ActionDisposable.Dispose()
   at Microsoft.Maui.Platform.ViewExtensions.<>c__DisplayClass43_0.<OnUnloaded>b__3()
   at Java.Lang.Thread.RunnableImplementor.Run()
   at Java.Lang.IRunnableInvoker.n_Run(IntPtr jnienv, IntPtr native__this)
   at Android.Runtime.JNINativeWrapper.Wrap_JniMarshal_PP_V(_JniMarshal_PP_V callback, IntPtr jnienv, IntPtr klazz)

It only happens sometimes, so it seems that the ContentViewGroup is not disposed correctly sometimes.

When closing a certain page in our production App, opening and closing it again, until the bug happens, it sometimes needs from a few seconds to a few minutes. It's more likely to happen on fast devices. Only on Android.

Seems to be similar to #28051, but for a different component.

Steps to Reproduce

I was not able to create a repro project yet, just tried it with a simple AppFlyout app, but the bug did not appear.
So if you don't know this bug anyway, I might need to add more functionality until it happens when I have time later.

Link to public reproduction project repository

No response

Version with bug

9.0.40 SR4

Is this a regression from previous behavior?

Yes, this used to work in .NET MAUI

Last version that worked well

9.0.30 SR3

Affected platforms

Android

Affected platform versions

Android 11, 14, 15 (probably all)

Did you find any workaround?

Using MAUI version 9.0.30
Bug still occurs in 9.0.70

Relevant log output

[bhavanesh2001]

#29676 (comment)

@markuskoehlersofa do you do anything similar to this in your app?

[dotnet-policy-service]

Hi @@markuskoehlersofa. We have added the "s/needs-repro" label to this issue, which indicates that we require steps and sample code to reproduce the issue before we can take further action. Please try to create a minimal sample project/solution or code samples which reproduce the issue, ideally as a GitHub repo that we can clone. See more details about creating repros here: https://github.com/dotnet/maui/blob/main/.github/repro.md

This issue will be closed automatically in 7 days if we do not hear back from you by then - please feel free to re-open it if you come back to this issue after that time.

[dotnet-policy-service]

This issue has been automatically marked as stale because it has been marked as requiring author feedback to reproduce the issue but has not had any activity for 4 days. It will be closed if no further activity occurs within 3 days of this comment. If it is closed, feel free to comment when you are able to provide the additional information and we will re-investigate.