Java.Lang.IllegalStateException: 'Can not perform this action after onSaveInstanceState'

[r-work]

Description

The above happens when user presses the Home key and the app goes in the background, and then the app sets the main page while in the background.

Steps to Reproduce

1. Run the repro app.
2. Once you see the "login" screen press Home on the device so the app goes to background.
3. Now you should see the app crashing.

Link to public reproduction project repository

https://github.com/r-work/MauiCrash

Version with bug

8.0.0-rc.2.9373

Is this a regression from previous behavior?

Not sure, did not test other versions

Last version that worked well

Unknown/Other

Affected platforms

Android

Affected platform versions

No response

Did you find any workaround?

No

Relevant log output

**Java.Lang.IllegalStateException:** 'Can not perform this action after onSaveInstanceState'

[mono-rt] [ERROR] FATAL UNHANDLED EXCEPTION: Java.Lang.IllegalStateException: Can not perform this action after onSaveInstanceState
[mono-rt]    at Java.Interop.JniEnvironment.InstanceMethods.CallIntMethod(JniObjectReference instance, JniMethodInfo method, JniArgumentValue* args) in /Users/runner/work/1/s/xamarin-android/external/Java.Interop/src/Java.Interop/obj/Release/net7.0/JniEnvironment.g.cs:line 20203
[mono-rt]    at Java.Interop.JniPeerMembers.JniInstanceMethods.InvokeAbstractInt32Method(String encodedMember, IJavaPeerable self, JniArgumentValue* parameters) in /Users/runner/work/1/s/xamarin-android/external/Java.Interop/src/Java.Interop/Java.Interop/JniPeerMembers.JniInstanceMethods_Invoke.cs:line 492
[mono-rt]    at AndroidX.Fragment.App.BackStackRecord.Commit() in C:\a\_work\1\s\generated\androidx.fragment.fragment\obj\Release
et6.0-android\generated\src\AndroidX.Fragment.App.BackStackRecord.cs:line 131
[mono-rt]    at Microsoft.Maui.Platform.NavigationRootManager.SetContentView(IView view) in D:\a\_work\1\s\src\Core\src\Platform\Android\Navigation\NavigationRootManager.cs:line 129
[mono-rt]    at Microsoft.Maui.Platform.NavigationRootManager.Connect(IView view, IMauiContext mauiContext) in D:\a\_work\1\s\src\Core\src\Platform\Android\Navigation\NavigationRootManager.cs:line 91
[mono-rt]    at Microsoft.Maui.Handlers.WindowHandler.CreateRootViewFromContent(IWindowHandler handler, IWindow window) in D:\a\_work\1\s\src\Core\src\Handlers\Window\WindowHandler.Android.cs:line 91
[mono-rt]    at Microsoft.Maui.Handlers.WindowHandler.MapContent(IWindowHandler handler, IWindow window) in D:\a\_work\1\s\src\Core\src\Handlers\Window\WindowHandler.Android.cs:line 27
[mono-rt]    at Microsoft.Maui.PropertyMapper`2.<>c__DisplayClass5_0[[Microsoft.Maui.IWindow, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[Microsoft.Maui.Handlers.IWindowHandler, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].<Add>b__0(IElementHandler h, IElement v) in D:\a\_work\1\s\src\Core\src\PropertyMapper.cs:line 172
[mono-rt]    at Microsoft.Maui.PropertyMapper.UpdatePropertyCore(String key, IElementHandler viewHandler, IElement virtualView) in D:\a\_work\1\s\src\Core\src\PropertyMapper.cs:line 47
[mono-rt]    at Microsoft.Maui.PropertyMapper.UpdateProperty(IElementHandler viewHandler, IElement virtualView, String property) in D:\a\_work\1\s\src\Core\src\PropertyMapper.cs:line 72
[mono-rt]    at Microsoft.Maui.Handlers.ElementHandler.UpdateValue(String property) in D:\a\_work\1\s\src\Core\src\Handlers\Element\ElementHandler.cs:line 87
[mono-rt]    at Microsoft.Maui.Controls.Window.OnPropertyChanged(String propertyName) in D:\a\_work\1\s\src\Controls\src\Core\Window\Window.cs:line 296
[mono-rt]    at Microsoft.Maui.Controls.BindableObject.SetValueActual(BindableProperty property, BindablePropertyContext context, Object value, Boolean currentlyApplying, SetValueFlags attributes, SetterSpecificity specificity, Boolean silent) in D:\a\_work\1\s\src\Controls\src\Core\BindableObject.cs:line 631
[mono-rt]    at Microsoft.Maui.Controls.BindableObject.SetValueCore(BindableProperty property, Object value, SetValueFlags attributes, SetValuePrivateFlags privateAttributes, SetterSpecificity specificity) in D:\a\_work\1\s\src\Controls\src\Core\BindableObject.cs:line 559
[mono-rt]    at Microsoft.Maui.Controls.BindableObject.SetValue(BindableProperty property, Object value) in D:\a\_work\1\s\src\Controls\src\Core\BindableObject.cs:line 464
[mono-rt]    at Microsoft.Maui.Controls.Window.set_Page(Page value) in D:\a\_work\1\s\src\Controls\src\Core\Window\Window.cs:line 122
[mono-rt]    at Microsoft.Maui.Controls.Application.set_MainPage(Page value) in D:\a\_work\1\s\src\Controls\src\Core\Application\Application.cs:line 106
[mono-rt]    at MauiCrash.LoginPage.<>c.<Timer_Elapsed>b__1_0() in C:\Users\rebin\source\repos\MauiCrash\MauiCrash\LoginPage.xaml.cs:line 16
[mono-rt]    at Java.Lang.Thread.RunnableImplementor.Run() in /Users/runner/work/1/s/xamarin-android/src/Mono.Android/Java.Lang/Thread.cs:line 36
[mono-rt]    at Java.Lang.IRunnableInvoker.n_Run(IntPtr jnienv, IntPtr native__this) in /Users/runner/work/1/s/xamarin-android/src/Mono.Android/obj/Release/net8.0/android-34/mcw/Java.L

[XamlTest]

Verified this on Visual Studio Enterprise 17.8.0 Preview 5.0(8.0.0-rc.2.9373). Repro on Android 14.0-API34, not repro on Windows 11 and iOS 16.4 with below Project:
MauiCrash.zip

[PureWeen]

Duplicate of #11501