Fixed CheckBox enabled color is not updated properly

src/Controls/src/Core/CheckBox/CheckBox.cs

@@ -46,7 +46,37 @@ public bool IsChecked
 		protected internal override void ChangeVisualState()
 		{
 			if (IsEnabled && IsChecked)
-				VisualStateManager.GoToState(this, IsCheckedVisualState);
+			{
+				bool isCheckedStateAvailable = false;
+				var visualStates = VisualStateManager.GetVisualStateGroups(this);
+				foreach (var group in visualStates)
+				{
+					if (group.Name is not "CommonStates")
+					{
+						continue;
+					}
+
+					foreach (var state in group.States)
+					{
+						if (state.Name is IsCheckedVisualState)
+						{
+							isCheckedStateAvailable = true;
+							break;
+						}
+					}
+
+					break;
+				}
+
+				if (isCheckedStateAvailable)
+				{
+					VisualStateManager.GoToState(this, IsCheckedVisualState);
+				}
+				else
+				{
+					VisualStateManager.GoToState(this, VisualStateManager.CommonStates.Normal);
+				}
+			}
 			else
 				base.ChangeVisualState();
 		}

src/Controls/tests/TestCases.HostApp/Issues/Issue23608.xaml

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+               x:Class="Maui.Controls.Sample.Issues.Issue23608"
+             Title="Issue23608">
+
+<VerticalStackLayout>
+    <VerticalStackLayout.Resources>
+     <Style TargetType="CheckBox">
+       <Setter Property="Color" Value="violet" />
+       <Setter Property="VisualStateManager.VisualStateGroups">
+         <VisualStateGroupList>
+           <VisualStateGroup x:Name="CommonStates">
+             <VisualState x:Name="Normal" />
+             <VisualState x:Name="Disabled">
+               <VisualState.Setters>
+                 <Setter Property="Color" Value="Gray" />
+               </VisualState.Setters>
+             </VisualState>
+           </VisualStateGroup>
+         </VisualStateGroupList>
+        </Setter>
+    </Style>
+    </VerticalStackLayout.Resources>
+<Label  Text="Enable the IsEnabled property" HorizontalTextAlignment="Center" VerticalTextAlignment="Center" AutomationId="Label" />
+<Switch AutomationId="Switch" HorizontalOptions="Center" IsToggled="{Binding IsEnabled}" />
+<CheckBox IsChecked="true" IsEnabled="{Binding IsEnabled}" />
+</VerticalStackLayout>
+</ContentPage>

src/Controls/tests/TestCases.HostApp/Issues/Issue23608.xaml.cs

@@ -0,0 +1,39 @@
+using System.ComponentModel;
+using System.Runtime.CompilerServices;
+
+namespace Maui.Controls.Sample.Issues;
+
+[Issue(IssueTracker.Github, 23608, "The checkbox's checked state color does not update when the IsEnabled property is changed dynamically", PlatformAffected.All)]
+public partial class Issue23608 : ContentPage
+{
+	public Issue23608()
+	{
+		InitializeComponent();
+		BindingContext = new Issue23608ViewModel();
+	}
+}
+
+public class Issue23608ViewModel : INotifyPropertyChanged
+{
+	private bool _isEnabled = false;
+
+	public bool IsEnabled
+	{
+		get => _isEnabled;
+		set
+		{
+			if (_isEnabled != value)
+			{
+				_isEnabled = value;
+				OnPropertyChanged();
+			}
+		}
+	}
+
+	public event PropertyChangedEventHandler PropertyChanged;
+
+	protected void OnPropertyChanged([CallerMemberName] string propertyName = null)
+	{
+		PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+	}
+}

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue23608.cs

@@ -0,0 +1,24 @@
+using NUnit.Framework;
+using UITest.Appium;
+using UITest.Core;
+
+namespace Microsoft.Maui.TestCases.Tests.Issues
+{
+	public class Issue23608 : _IssuesUITest
+	{
+		public Issue23608(TestDevice device) : base(device)
+		{
+		}
+
+		public override string Issue => "The checkbox's checked state color does not update when the IsEnabled property is changed dynamically";
+
+		[Test]
+		[Category(UITestCategories.CheckBox)]
+		public void UpdatedIsEnabledProperty()
+		{
+			App.WaitForElement("Label");
+			App.Click("Switch");
+			VerifyScreenshot();
+		}
+	}
+}