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[Android] Fix WebView.CanGoBack() returning true on first navigated page due to synthetic about:blank history entry - #35841

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kubaflo merged 4 commits into
dotnet:inflight/currentfrom
praveenkumarkarunanithi:fix-35788
Jun 19, 2026
Merged

[Android] Fix WebView.CanGoBack() returning true on first navigated page due to synthetic about:blank history entry#35841
kubaflo merged 4 commits into
dotnet:inflight/currentfrom
praveenkumarkarunanithi:fix-35788

fix update as per internal concerns

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Build Failures

maui-pr-devicetests / net10.0 iOS Helix Tests (Mono) / Run DeviceTests iOS (Mono) / DeviceTestsIOS (Windows)

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    ❌PowerShell exited with code '1'.

maui-pr-devicetests / net10.0 MacCatalyst Helix Tests (Mono) / Run DeviceTests MacCatalyst (Mono) / DeviceTestsMacCatalyst (Windows)

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    ❌PowerShell exited with code '1'.

maui-pr-devicetests / net10.0 Android Helix Tests (Mono) / Run DeviceTests Android (Mono) / DeviceTestsAndroid (Windows)

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    ❌PowerShell exited with code '1'.

7 other jobs are failing and were not displayed due to space limitations.
Builds with failures: [maui-pr-devicetests] [maui-pr-uitests] [maui-pr]

Test Failures (108 tests failed)

🔹 [All failing tests from maui-pr]

    ⚠️ 47 failing tests not displayed for this pipeline due to space limitations

    ❌ BorderStrokeShapeDoesNotLeak [Console] [Details] [Artifacts] [4.83% failure rate]
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    This is a helix work item crash with status: BadExit. To investigate look the [Console log] / navigate to [Helix Artifacts]

    Failing Configuration
    ❌ BorderStrokeShapeSubscribed [Console] [Details] [Artifacts] [3.36% failure rate]
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    Failing Configuration
    Exception Message
    System.ObjectDisposedException : Cannot access a disposed object.
Object name: 'System.Threading.ThreadLocal`1[[Microsoft.Maui.Dispatching.IDispatcher, Microsoft.Maui, Version=10.0.0.0, Culture=neutral, PublicKeyToken=null]]'.
    CallStack
       at System.Threading.ThreadLocal`1.GetValueSlow()
   at Microsoft.Maui.UnitTests.DispatcherProviderStub.GetForCurrentThread() in /_/src/Core/tests/UnitTests/TestClasses/DispatcherStub.cs:line 108
   at Microsoft.Maui.Dispatching.Dispatcher.GetForCurrentThread() in /_/src/Core/src/Dispatching/Dispatcher.cs:line 9
   at Microsoft.Maui.Controls.BindableObject..ctor() in /_/src/Controls/src/Core/BindableObject.cs:line 38
   at Microsoft.Maui.Controls.Element..ctor() in /_/src/Controls/src/Core/Element/Element.cs:line 701
   at Microsoft.Maui.Controls.StyleableElement..ctor() in /_/src/Controls/src/Core/StyleableElement/StyleableElement.cs:line 17
   at Microsoft.Maui.Controls.NavigableElement..ctor() in /_/src/Controls/src/Core/NavigableElement/NavigableElement.cs:line 22
   at Microsoft.Maui.Controls.VisualElement..ctor() in /_/src/Controls/src/Core/VisualElement/VisualElement.cs:line 531
   at Microsoft.Maui.Controls.View..ctor() in /_/src/Controls/src/Core/View/View.cs:line 94
   at Microsoft.Maui.Controls.Shapes.Shape..ctor() in /_/src/Controls/src/Core/Shapes/Shape.cs:line 22
   at Microsoft.Maui.Controls.Shapes.RoundRectangle..ctor() in /_/src/Controls/src/Core/Shapes/RoundRectangle.cs:line 10
   at Microsoft.Maui.UnitTests.Views.BorderTests.BorderStrokeShapeSubscribed() in /_/src/Core/tests/UnitTests/Views/BorderTests.cs:line 56
--- End of stack trace from previous location ---
    ❌ BorderStrokeSubscribed [Console] [Details] [Artifacts] [4.12% failure rate]
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    Failing Configuration
    Exception Message
    System.ObjectDisposedException : Cannot access a disposed object.
Object name: 'System.Threading.ThreadLocal`1[[Microsoft.Maui.Dispatching.IDispatcher, Microsoft.Maui, Version=10.0.0.0, Culture=neutral, PublicKeyToken=null]]'.
    CallStack
       at System.Threading.ThreadLocal`1.GetValueSlow()
   at Microsoft.Maui.UnitTests.DispatcherProviderStub.GetForCurrentThread() in /_/src/Core/tests/UnitTests/TestClasses/DispatcherStub.cs:line 108
   at Microsoft.Maui.Dispatching.Dispatcher.GetForCurrentThread() in /_/src/Core/src/Dispatching/Dispatcher.cs:line 9
   at Microsoft.Maui.Controls.BindableObject..ctor() in /_/src/Controls/src/Core/BindableObject.cs:line 38
   at Microsoft.Maui.Controls.Element..ctor() in /_/src/Controls/src/Core/Element/Element.cs:line 701
   at Microsoft.Maui.Controls.Brush..ctor()
   at Microsoft.Maui.Controls.SolidColorBrush..ctor(Color color) in /_/src/Controls/src/Core/SolidColorBrush.cs:line 19
   at Microsoft.Maui.UnitTests.Views.BorderTests.BorderStrokeSubscribed() in /_/src/Core/tests/UnitTests/Views/BorderTests.cs:line 79
--- End of stack trace from previous location ---
    ❌ CanAddCustomEvent [Console] [Details] [Artifacts] [2.87% failure rate]
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    Failing Configuration
    Exception Message
    System.ObjectDisposedException : Cannot access a disposed object.
Object name: 'System.Threading.ThreadLocal`1[[Microsoft.Maui.Dispatching.IDispatcher, Microsoft.Maui, Version=10.0.0.0, Culture=neutral, PublicKeyToken=null]]'.
    CallStack
       at System.Threading.ThreadLocal`1.GetValueSlow()
   at Microsoft.Maui.UnitTests.DispatcherProviderStub.GetForCurrentThread() in /_/src/Core/tests/UnitTests/TestClasses/DispatcherStub.cs:line 108
   at Microsoft.Maui.Dispatching.Dispatcher.GetForCurrentThread() in /_/src/Core/src/Dispatching/Dispatcher.cs:line 9
   at Microsoft.Maui.Hosting.AppHostBuilderExtensions.GetDispatcher(IServiceProvider services, Boolean fallBackToApplicationDispatcher) in /_/src/Core/src/Hosting/Dispatching/AppHostBuilderExtensions.cs:line 169
   at Microsoft.Maui.Hosting.AppHostBuilderExtensions.<>c.<ConfigureDispatching>b__1_1(IServiceProvider svc) in /_/src/Core/src/Hosting/Dispatching/AppHostBuilderExtensions.cs:line 25
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitFactory(FactoryCallSite factoryCallSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSiteMain(ServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitRootCache(ServiceCallSite callSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(ServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.Resolve(ServiceCallSite callSite, ServiceProviderEngineScope scope)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.CreateServiceAccessor(ServiceIdentifier serviceIdentifier)
   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.GetService(ServiceIdentifier serviceIdentifier, ServiceProviderEngineScope serviceProviderEngineScope)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.GetService(Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetService[T](IServiceProvider provider)
   at Microsoft.Maui.Hosting.AppHostBuilderExtensions.GetOptionalApplicationDispatcher(IServiceProvider provider) in /_/src/Core/src/Hosting/Dispatching/AppHostBuilderExtensions.cs:line 158
   at Microsoft.Maui.Hosting.AppHostBuilderExtensions.ApplicationDispatcherInitializer.Initialize(IServiceProvider services) in /_/src/Core/src/Hosting/Dispatching/AppHostBuilderExtensions.cs:line 181
   at Microsoft.Maui.MauiContextExtensions.InitializeAppServices(MauiApp mauiApp) in /_/src/Core/src/MauiContextExtensions.cs:line 83
   at Microsoft.Maui.Hosting.MauiAppBuilder.Build() in /_/src/Core/src/Hosting/MauiAppBuilder.cs:line 198
   at Microsoft.Maui.UnitTests.LifecycleEvents.LifecycleEventsTests.CanAddCustomEvent() in /_/src/Core/tests/UnitTests/LifecycleEvents/LifecycleEventsTests.cs:line 29
   at System.Reflection.MethodBaseInvoker.InterpretedInvoke_Method(Object obj, IntPtr* args)
   at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(Object obj, BindingFlags invokeAttr)
    ❌ CanAddDelegateEvent [Console] [Details] [Artifacts] [2.93% failure rate]
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    Failing Configuration
    Exception Message
    System.ObjectDisposedException : Cannot access a disposed object.
Object name: 'System.Threading.ThreadLocal`1[[Microsoft.Maui.Dispatching.IDispatcher, Microsoft.Maui, Version=10.0.0.0, Culture=neutral, PublicKeyToken=null]]'.
    CallStack
       at System.Threading.ThreadLocal`1.GetValueSlow()
   at Microsoft.Maui.UnitTests.DispatcherProviderStub.GetForCurrentThread() in /_/src/Core/tests/UnitTests/TestClasses/DispatcherStub.cs:line 108
   at Microsoft.Maui.Dispatching.Dispatcher.GetForCurrentThread() in /_/src/Core/src/Dispatching/Dispatcher.cs:line 9
   at Microsoft.Maui.Hosting.AppHostBuilderExtensions.GetDispatcher(IServiceProvider services, Boolean fallBackToApplicationDispatcher) in /_/src/Core/src/Hosting/Dispatching/AppHostBuilderExtensions.cs:line 169
   at Microsoft.Maui.Hosting.AppHostBuilderExtensions.<>c.<ConfigureDispatching>b__1_1(IServiceProvider svc) in /_/src/Core/src/Hosting/Dispatching/AppHostBuilderExtensions.cs:line 25
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitFactory(FactoryCallSite factoryCallSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSiteMain(ServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitRootCache(ServiceCallSite callSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(ServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.Resolve(ServiceCallSite callSite, ServiceProviderEngineScope scope)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.CreateServiceAccessor(ServiceIdentifier serviceIdentifier)
   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.GetService(ServiceIdentifier serviceIdentifier, ServiceProviderEngineScope serviceProviderEngineScope)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.GetService(Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetService[T](IServiceProvider provider)
   at Microsoft.Maui.Hosting.AppHostBuilderExtensions.GetOptionalApplicationDispatcher(IServiceProvider provider) in /_/src/Core/src/Hosting/Dispatching/AppHostBuilderExtensions.cs:line 158
   at Microsoft.Maui.Hosting.AppHostBuilderExtensions.ApplicationDispatcherInitializer.Initialize(IServiceProvider services) in /_/src/Core/src/Hosting/Dispatching/AppHostBuilderExtensions.cs:line 181
   at Microsoft.Maui.MauiContextExtensions.InitializeAppServices(MauiApp mauiApp) in /_/src/Core/src/MauiContextExtensions.cs:line 83
   at Microsoft.Maui.Hosting.MauiAppBuilder.Build() in /_/src/Core/src/Hosting/MauiAppBuilder.cs:line 198
   at Microsoft.Maui.UnitTests.LifecycleEvents.LifecycleEventsTests.CanAddDelegateEvent() in /_/src/Core/tests/UnitTests/LifecycleEvents/LifecycleEventsTests.cs:line 41
   at System.Reflection.MethodBaseInvoker.InterpretedInvoke_Method(Object obj, IntPtr* args)
   at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(Object obj, BindingFlags invokeAttr)

🔹 [All failing tests from maui-pr-devicetests]

    ⚠️ 56 failing tests not displayed for this pipeline due to space limitations

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