diff --git a/Directory.Packages.props b/Directory.Packages.props
index ce938e062..835a7f410 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -64,7 +64,6 @@
     <PackageVersion Include="Avalonia.Diagnostics" Version="11.1.3" />
     <PackageVersion Include="Avalonia.LinuxFramebuffer" Version="11.1.3" />
     <PackageVersion Include="Avalonia.Markup.Xaml.Loader" Version="11.1.3" />
-    <PackageVersion Include="Avalonia.ReactiveUI" Version="11.1.3" />     <!-- Remove Avalonia.ReactiveUI -->
     <PackageVersion Include="Avalonia.Themes.Simple" Version="11.1.3" />
     <PackageVersion Include="Avalonia.Themes.Fluent" Version="11.1.3" />
     <PackageVersion Include="Avalonia.Fonts.Inter" Version="11.1.3" />
diff --git a/tests/Avalonia/Prism.Avalonia.Tests/Regions/RegionViewRegistryFixture.cs b/tests/Avalonia/Prism.Avalonia.Tests/Regions/RegionViewRegistryFixture.cs
index e3e9aa16e..1965219cf 100644
--- a/tests/Avalonia/Prism.Avalonia.Tests/Regions/RegionViewRegistryFixture.cs
+++ b/tests/Avalonia/Prism.Avalonia.Tests/Regions/RegionViewRegistryFixture.cs
@@ -8,196 +8,194 @@
 using Prism.Navigation.Regions;
 using Xunit;
 
-namespace Prism.Avalonia.Tests.Regions
+namespace Prism.Avalonia.Tests.Regions;
+
+public class RegionViewRegistryFixture
 {
-    public class RegionViewRegistryFixture
+    [Fact]
+    public void CanRegisterContentAndRetrieveIt()
     {
-        [Fact]
-        public void CanRegisterContentAndRetrieveIt()
-        {
-            var containerMock = new Mock<IContainerExtension>();
-            ContainerLocator.SetContainerExtension(containerMock.Object);
-            containerMock.Setup(c => c.Resolve(typeof(MockContentObject))).Returns(new MockContentObject());
-            var registry = new RegionViewRegistry(containerMock.Object);
-
-            registry.RegisterViewWithRegion("MyRegion", typeof(MockContentObject));
-            var result = registry.GetContents("MyRegion");
-
-            //Assert.Equal(typeof(MockContentObject), calledType);
-            Assert.NotNull(result);
-            Assert.Single(result);
-            Assert.IsType<MockContentObject>(result.ElementAt(0));
-        }
+        var containerMock = new Mock<IContainerExtension>();
+        ContainerLocator.SetContainerExtension(containerMock.Object);
+        containerMock.Setup(c => c.Resolve(typeof(MockContentObject))).Returns(new MockContentObject());
+        var registry = new RegionViewRegistry(containerMock.Object);
 
-        [Fact]
-        public void ShouldRaiseEventWhenAddingContent()
-        {
-            var listener = new MySubscriberClass();
-            var containerMock = new Mock<IContainerExtension>();
-            containerMock.Setup(c => c.Resolve(typeof(MockContentObject))).Returns(new MockContentObject());
-            var registry = new RegionViewRegistry(containerMock.Object);
+        registry.RegisterViewWithRegion("MyRegion", typeof(MockContentObject));
+        var result = registry.GetContents("MyRegion");
 
-            registry.ContentRegistered += listener.OnContentRegistered;
+        Assert.NotNull(result);
+        Assert.Single(result);
+        Assert.IsType<MockContentObject>(result.ElementAt(0));
+    }
 
-            registry.RegisterViewWithRegion("MyRegion", typeof(MockContentObject));
+    [Fact]
+    public void ShouldRaiseEventWhenAddingContent()
+    {
+        var listener = new MySubscriberClass();
+        var containerMock = new Mock<IContainerExtension>();
+        containerMock.Setup(c => c.Resolve(typeof(MockContentObject))).Returns(new MockContentObject());
+        var registry = new RegionViewRegistry(containerMock.Object);
 
-            Assert.NotNull(listener.onViewRegisteredArguments);
-            Assert.NotNull(listener.onViewRegisteredArguments.GetView);
+        registry.ContentRegistered += listener.OnContentRegistered;
 
-            var result = listener.onViewRegisteredArguments.GetView(containerMock.Object);
-            Assert.NotNull(result);
-            Assert.IsType<MockContentObject>(result);
-        }
+        registry.RegisterViewWithRegion("MyRegion", typeof(MockContentObject));
 
-        [Fact]
-        public void CanRegisterContentAsDelegateAndRetrieveIt()
-        {
-            ContainerLocator.SetContainerExtension(Mock.Of<IContainerExtension>());
-            var registry = new RegionViewRegistry(null);
-            var content = new MockContentObject();
+        Assert.NotNull(listener.onViewRegisteredArguments);
+        Assert.NotNull(listener.onViewRegisteredArguments.GetView);
 
-            registry.RegisterViewWithRegion("MyRegion", () => content);
-            var result = registry.GetContents("MyRegion");
+        var result = listener.onViewRegisteredArguments.GetView(containerMock.Object);
+        Assert.NotNull(result);
+        Assert.IsType<MockContentObject>(result);
+    }
 
-            Assert.NotNull(result);
-            Assert.Single(result);
-            Assert.Same(content, result.ElementAt(0));
-        }
+    [Fact]
+    public void CanRegisterContentAsDelegateAndRetrieveIt()
+    {
+        ContainerLocator.SetContainerExtension(Mock.Of<IContainerExtension>());
+        var registry = new RegionViewRegistry(null);
+        var content = new MockContentObject();
 
-        [Fact]
-        public async Task ShouldNotPreventSubscribersFromBeingGarbageCollected()
-        {
-            var registry = new RegionViewRegistry(null);
-            var subscriber = new MySubscriberClass();
-            registry.ContentRegistered += subscriber.OnContentRegistered;
+        registry.RegisterViewWithRegion("MyRegion", () => content);
+        var result = registry.GetContents("MyRegion");
 
-            WeakReference subscriberWeakReference = new WeakReference(subscriber);
+        Assert.NotNull(result);
+        Assert.Single(result);
+        Assert.Same(content, result.ElementAt(0));
+    }
 
-            subscriber = null;
-            await Task.Delay(50);
-            GC.Collect();
+    [Fact]
+    public async Task ShouldNotPreventSubscribersFromBeingGarbageCollected()
+    {
+        var registry = new RegionViewRegistry(null);
+        var subscriber = new MySubscriberClass();
+        registry.ContentRegistered += subscriber.OnContentRegistered;
 
-            Assert.False(subscriberWeakReference.IsAlive);
-        }
+        WeakReference subscriberWeakReference = new WeakReference(subscriber);
+
+        subscriber = null;
+        await Task.Delay(50);
+        GC.Collect();
+
+        Assert.False(subscriberWeakReference.IsAlive);
+    }
 
-        [Fact]
-        public void OnRegisterErrorShouldGiveClearException()
+    [Fact]
+    public void OnRegisterErrorShouldGiveClearException()
+    {
+        var registry = new RegionViewRegistry(null);
+        registry.ContentRegistered += new EventHandler<ViewRegisteredEventArgs>(FailWithInvalidOperationException);
+
+        try
         {
-            var registry = new RegionViewRegistry(null);
-            registry.ContentRegistered += new EventHandler<ViewRegisteredEventArgs>(FailWithInvalidOperationException);
-
-            try
-            {
-                registry.RegisterViewWithRegion("R1", typeof(object));
-                //Assert.Fail();
-            }
-            catch (ViewRegistrationException ex)
-            {
-                Assert.Contains("Dont do this", ex.Message);
-                Assert.Contains("R1", ex.Message);
-                Assert.Equal("Dont do this", ex.InnerException.Message);
-            }
-            catch (Exception)
-            {
-                //Assert.Fail("Wrong exception type");
-            }
+            registry.RegisterViewWithRegion("R1", typeof(object));
+            //Assert.Fail();
         }
-
-        [Fact]
-        public void OnRegisterErrorShouldSkipFrameworkExceptions()
+        catch (ViewRegistrationException ex)
         {
-            ExceptionExtensions.RegisterFrameworkExceptionType(typeof(FrameworkException));
-            var registry = new RegionViewRegistry(null);
-            registry.ContentRegistered += new EventHandler<ViewRegisteredEventArgs>(FailWithFrameworkException);
-            var ex = Record.Exception(() => registry.RegisterViewWithRegion("R1", typeof(object)));
-            Assert.NotNull(ex);
-            Assert.IsType<ViewRegistrationException>(ex);
             Assert.Contains("Dont do this", ex.Message);
             Assert.Contains("R1", ex.Message);
+            Assert.Equal("Dont do this", ex.InnerException.Message);
         }
-
-        [StaFact(DisplayName = "Flaky test, runs alone but not in a group")]
-        public void RegisterViewWithRegion_ShouldHaveViewModel_ByDefault()
+        catch (Exception)
         {
-            ViewModelLocatorFixture.ResetViewModelLocationProvider();
+            //Assert.Fail("Wrong exception type");
+        }
+    }
 
-            var containerMock = new Mock<IContainerExtension>();
-            ContainerLocator.SetContainerExtension(containerMock.Object);
-            containerMock.Setup(c => c.Resolve(typeof(Mocks.Views.Mock))).Returns(new Mocks.Views.Mock());
-            containerMock.Setup(c => c.Resolve(typeof(Mocks.ViewModels.MockViewModel))).Returns(new Mocks.ViewModels.MockViewModel());
-            var registry = new RegionViewRegistry(containerMock.Object);
+    [Fact]
+    public void OnRegisterErrorShouldSkipFrameworkExceptions()
+    {
+        ExceptionExtensions.RegisterFrameworkExceptionType(typeof(FrameworkException));
+        var registry = new RegionViewRegistry(null);
+        registry.ContentRegistered += new EventHandler<ViewRegisteredEventArgs>(FailWithFrameworkException);
+        var ex = Record.Exception(() => registry.RegisterViewWithRegion("R1", typeof(object)));
+        Assert.NotNull(ex);
+        Assert.IsType<ViewRegistrationException>(ex);
+        Assert.Contains("Dont do this", ex.Message);
+        Assert.Contains("R1", ex.Message);
+    }
+
+    [StaFact(DisplayName = "Flaky test, runs alone but not in a group")]
+    public void RegisterViewWithRegion_ShouldHaveViewModel_ByDefault()
+    {
+        ViewModelLocatorFixture.ResetViewModelLocationProvider();
 
-            registry.RegisterViewWithRegion("MyRegion", typeof(Mocks.Views.Mock));
+        var containerMock = new Mock<IContainerExtension>();
+        ContainerLocator.SetContainerExtension(containerMock.Object);
+        containerMock.Setup(c => c.Resolve(typeof(Mocks.Views.Mock))).Returns(new Mocks.Views.Mock());
+        containerMock.Setup(c => c.Resolve(typeof(Mocks.ViewModels.MockViewModel))).Returns(new Mocks.ViewModels.MockViewModel());
+        var registry = new RegionViewRegistry(containerMock.Object);
 
-            var result = registry.GetContents("MyRegion");
-            Assert.NotNull(result);
-            Assert.Single(result);
+        registry.RegisterViewWithRegion("MyRegion", typeof(Mocks.Views.Mock));
 
-            var view = result.ElementAt(0) as Control;
-            Assert.IsType<Mocks.Views.Mock>(view);
-            Assert.NotNull(view.DataContext);
-            Assert.IsType<Mocks.ViewModels.MockViewModel>(view.DataContext);
-        }
+        var result = registry.GetContents("MyRegion");
+        Assert.NotNull(result);
+        Assert.Single(result);
 
-        [StaFact(DisplayName = "Flaky test, runs alone but not in a group")]
-        public void RegisterViewWithRegion_ShouldNotHaveViewModel_OnOptOut()
-        {
-            ViewModelLocatorFixture.ResetViewModelLocationProvider();
+        var view = result.ElementAt(0) as Control;
+        Assert.IsType<Mocks.Views.Mock>(view);
+        Assert.NotNull(view.DataContext);
+        Assert.IsType<Mocks.ViewModels.MockViewModel>(view.DataContext);
+    }
 
-            var containerMock = new Mock<IContainerExtension>();
-            ContainerLocator.SetContainerExtension(containerMock.Object);
-            containerMock.Setup(c => c.Resolve(typeof(Mocks.Views.MockOptOut))).Returns(new Mocks.Views.MockOptOut());
-            containerMock.Setup(c => c.Resolve(typeof(Mocks.ViewModels.MockOptOutViewModel))).Returns(new Mocks.ViewModels.MockOptOutViewModel());
-            var registry = new RegionViewRegistry(containerMock.Object);
+    [StaFact(DisplayName = "Flaky test, runs alone but not in a group")]
+    public void RegisterViewWithRegion_ShouldNotHaveViewModel_OnOptOut()
+    {
+        ViewModelLocatorFixture.ResetViewModelLocationProvider();
 
-            registry.RegisterViewWithRegion("MyRegion", typeof(Mocks.Views.MockOptOut));
+        var containerMock = new Mock<IContainerExtension>();
+        ContainerLocator.SetContainerExtension(containerMock.Object);
+        containerMock.Setup(c => c.Resolve(typeof(Mocks.Views.MockOptOut))).Returns(new Mocks.Views.MockOptOut());
+        containerMock.Setup(c => c.Resolve(typeof(Mocks.ViewModels.MockOptOutViewModel))).Returns(new Mocks.ViewModels.MockOptOutViewModel());
+        var registry = new RegionViewRegistry(containerMock.Object);
 
-            var result = registry.GetContents("MyRegion");
-            Assert.NotNull(result);
-            Assert.Single(result);
+        registry.RegisterViewWithRegion("MyRegion", typeof(Mocks.Views.MockOptOut));
 
-            var view = result.ElementAt(0) as Control;
-            Assert.IsType<Mocks.Views.MockOptOut>(view);
-            Assert.Null(view.DataContext);
-        }
+        var result = registry.GetContents("MyRegion");
+        Assert.NotNull(result);
+        Assert.Single(result);
 
-        private void FailWithFrameworkException(object sender, ViewRegisteredEventArgs e)
-        {
-            try
-            {
-                FailWithInvalidOperationException(sender, e);
-            }
-            catch (Exception ex)
-            {
-                throw new FrameworkException(ex);
-            }
-        }
+        var view = result.ElementAt(0) as Control;
+        Assert.IsType<Mocks.Views.MockOptOut>(view);
+        Assert.NotNull(view.DataContext);
+    }
 
-        private void FailWithInvalidOperationException(object sender, ViewRegisteredEventArgs e)
+    private void FailWithFrameworkException(object sender, ViewRegisteredEventArgs e)
+    {
+        try
         {
-            throw new InvalidOperationException("Dont do this");
+            FailWithInvalidOperationException(sender, e);
         }
-
-        private class MockContentObject
+        catch (Exception ex)
         {
+            throw new FrameworkException(ex);
         }
+    }
+
+    private void FailWithInvalidOperationException(object sender, ViewRegisteredEventArgs e)
+    {
+        throw new InvalidOperationException("Dont do this");
+    }
 
-        private class MySubscriberClass
+    private class MockContentObject
+    {
+    }
+
+    private class MySubscriberClass
+    {
+        public ViewRegisteredEventArgs onViewRegisteredArguments;
+        public void OnContentRegistered(object sender, ViewRegisteredEventArgs e)
         {
-            public ViewRegisteredEventArgs onViewRegisteredArguments;
-            public void OnContentRegistered(object sender, ViewRegisteredEventArgs e)
-            {
-                onViewRegisteredArguments = e;
-            }
+            onViewRegisteredArguments = e;
         }
+    }
 
-        private class FrameworkException : Exception
+    private class FrameworkException : Exception
+    {
+        public FrameworkException(Exception innerException)
+            : base("", innerException)
         {
-            public FrameworkException(Exception innerException)
-                : base("", innerException)
-            {
 
-            }
         }
     }
 }