[Android] Microsoft.Maui.Platform.MauiTextView ObjectDisposedException

[claytonone]

Description

After upgrading from .net 8 to .net 9 we are now seeing loads of exceptions related to MauiTextView on Android. We're not entirely sure what's causing it as the stack trace is all native but it seems to happen sometimes when you navigate back from a page that contains an Entry. (See stack trace below). This was not a problem in .net 8

Steps to Reproduce

No response

Link to public reproduction project repository

No response

Version with bug

9.0.70 SR7

Is this a regression from previous behavior?

Yes, this used to work in .NET MAUI

Last version that worked well

8.0.100 SR10

Affected platforms

Android

Affected platform versions

No response

Did you find any workaround?

No

Relevant log output

System.ObjectDisposedException: ObjectDisposed_Generic
ObjectDisposed_ObjectName_Name, Microsoft.Maui.Platform.MauiTextView
  ?, in void JniPeerMembers.AssertSelf(IJavaPeerable)
  ?, in void JniInstanceMethods.InvokeVirtualVoidMethod(string, IJavaPeerable, JniArgumentValue*)
  ?, in void View.RemoveOnAttachStateChangeListener(IOnAttachStateChangeListener)
  ?, in void View.remove_ViewDetachedFromWindow(EventHandler<ViewDetachedFromWindowEventArgs>)+(IOnAttachStateChangeListener __v) => { } [0]
  ?, in void EventHelper.RemoveEventHandler<IOnAttachStateChangeListener, IOnAttachStateChangeListenerImplementor>(ref WeakReference, Func<IOnAttachStateChangeListenerImplementor, bool>, Action<IOnAttachStateChangeListener>, Action<IOnAttachStateChangeListenerImplementor>)
  ?, in void View.remove_ViewDetachedFromWindow(EventHandler<ViewDetachedFromWindowEventArgs>)
  ?, in IDisposable ViewExtensions.OnUnloaded(View view, Action action)+() => { } [1]
  ?, in void ActionDisposable.Dispose()
  ?, in IDisposable ViewExtensions.OnUnloaded(View view, Action action)+() => { } [3]
  ?, in void RunnableImplementor.Run()
  ?, in void IRunnableInvoker.n_Run(IntPtr jnienv, IntPtr native__this)
  ?, in void JNINativeWrapper.Wrap_JniMarshal_PP_V(_JniMarshal_PP_V callback, IntPtr jnienv, IntPtr klazz)

[bhavanesh2001]

I'm going to take a wild guess here — are you performing any teardown when a page is popped?
For example, using something like MemoryToolkit.Maui?

[jsuarezruiz]

Do you have a sample where reproduce the issue? Can you share more details? The log shows that use an Entry and navigates backward. Is it modal navigation?

[claytonone]

@bhavanesh2001 Not aware of anything no.
@jsuarezruiz Repo is quite difficult as it doesn't happen every time and seems to happen more often in release mode on real devices. The navigation is simply by pressing the title bar back button on Android on a normal content page. (I'm using Navigation page rather than shell).

This issue looks more widespread, I can see another few tickets with almost the same exception.
#29711
#28051

[alpayclsr1]

@claytonone You can add HandlerProperties.DisconnectPolicy = "Manual" to the Entry and Labels on that page as a temporary solution. I'm experiencing the same issue, and this workaround helped me resolve it for now.