diff --git a/src/ReactiveUI.Winforms/RoutedViewHost.cs b/src/ReactiveUI.Winforms/RoutedViewHost.cs
index 717274c4df..eea62182c6 100644
--- a/src/ReactiveUI.Winforms/RoutedViewHost.cs
+++ b/src/ReactiveUI.Winforms/RoutedViewHost.cs
@@ -98,7 +98,7 @@ public RoutedControlHost()
     /// </value>
     [Category("ReactiveUI")]
     [Description("The default control when no viewmodel is specified")]
-    [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
+    [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
     public Control? DefaultContent
     {
         get => _defaultContent;
@@ -110,7 +110,7 @@ public Control? DefaultContent
     /// </summary>
     [Category("ReactiveUI")]
     [Description("The router.")]
-    [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
+    [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
     public RoutingState? Router
     {
         get => _router;
@@ -121,7 +121,7 @@ public RoutingState? Router
     /// Gets or sets the view contract observable.
     /// </summary>
     [Browsable(false)]
-    [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
+    [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
     public IObservable<string>? ViewContractObservable
     {
         get => _viewContractObservable;
@@ -132,7 +132,7 @@ public IObservable<string>? ViewContractObservable
     /// Gets or sets the view locator.
     /// </summary>
     [Browsable(false)]
-    [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
+    [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
     public IViewLocator? ViewLocator { get; set; }
 
     /// <inheritdoc/>
diff --git a/src/ReactiveUI.Winforms/ViewModelViewHost.cs b/src/ReactiveUI.Winforms/ViewModelViewHost.cs
index f2b225b41e..4e7306fea0 100644
--- a/src/ReactiveUI.Winforms/ViewModelViewHost.cs
+++ b/src/ReactiveUI.Winforms/ViewModelViewHost.cs
@@ -45,7 +45,6 @@ public ViewModelControlHost()
     /// <summary>
     /// Gets or sets a value indicating whether [default cache views enabled].
     /// </summary>
-    [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
     public static bool DefaultCacheViewsEnabled { get; set; }
 
     /// <summary>
@@ -58,7 +57,7 @@ public ViewModelControlHost()
     /// </summary>
     [Category("ReactiveUI")]
     [Description("The default control when no viewmodel is specified")]
-    [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
+    [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
     public Control? DefaultContent
     {
         get => _defaultContent;
@@ -72,7 +71,7 @@ public Control? DefaultContent
     /// The view contract observable.
     /// </value>
     [Browsable(false)]
-    [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
+    [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
     public IObservable<string>? ViewContractObservable
     {
         get => _viewContractObservable;
@@ -83,14 +82,14 @@ public IObservable<string>? ViewContractObservable
     /// Gets or sets the view locator.
     /// </summary>
     [Browsable(false)]
-    [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
+    [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
     public IViewLocator? ViewLocator { get; set; }
 
     /// <inheritdoc/>
     [Category("ReactiveUI")]
     [Description("The viewmodel to host.")]
     [Bindable(true)]
-    [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
+    [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
     public object? ViewModel
     {
         get => _viewModel;
@@ -103,7 +102,7 @@ public object? ViewModel
     [Category("ReactiveUI")]
     [Description("The Current View")]
     [Bindable(true)]
-    [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
+    [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
     public object? Content
     {
         get => _content;
diff --git a/src/tests/ReactiveUI.WinForms.Tests/API/ApiApprovalTests.Winforms.DotNet10_0.verified.txt b/src/tests/ReactiveUI.WinForms.Tests/API/ApiApprovalTests.Winforms.DotNet10_0.verified.txt
index 02edf5bce0..2c8860fbd1 100644
--- a/src/tests/ReactiveUI.WinForms.Tests/API/ApiApprovalTests.Winforms.DotNet10_0.verified.txt
+++ b/src/tests/ReactiveUI.WinForms.Tests/API/ApiApprovalTests.Winforms.DotNet10_0.verified.txt
@@ -74,17 +74,17 @@ namespace ReactiveUI.Winforms
         public RoutedControlHost() { }
         [System.ComponentModel.Category("ReactiveUI")]
         [System.ComponentModel.Description("The default control when no viewmodel is specified")]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public System.Windows.Forms.Control? DefaultContent { get; set; }
         [System.ComponentModel.Category("ReactiveUI")]
         [System.ComponentModel.Description("The router.")]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public ReactiveUI.RoutingState? Router { get; set; }
         [System.ComponentModel.Browsable(false)]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public System.IObservable<string>? ViewContractObservable { get; set; }
         [System.ComponentModel.Browsable(false)]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public ReactiveUI.IViewLocator? ViewLocator { get; set; }
         public event System.ComponentModel.PropertyChangedEventHandler? PropertyChanged;
         public event System.ComponentModel.PropertyChangingEventHandler? PropertyChanging;
@@ -112,25 +112,24 @@ namespace ReactiveUI.Winforms
         [System.ComponentModel.Bindable(true)]
         [System.ComponentModel.Category("ReactiveUI")]
         [System.ComponentModel.Description("The Current View")]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public object? Content { get; protected set; }
         public System.Windows.Forms.Control? CurrentView { get; }
         [System.ComponentModel.Category("ReactiveUI")]
         [System.ComponentModel.Description("The default control when no viewmodel is specified")]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public System.Windows.Forms.Control? DefaultContent { get; set; }
         [System.ComponentModel.Browsable(false)]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public System.IObservable<string>? ViewContractObservable { get; set; }
         [System.ComponentModel.Browsable(false)]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public ReactiveUI.IViewLocator? ViewLocator { get; set; }
         [System.ComponentModel.Bindable(true)]
         [System.ComponentModel.Category("ReactiveUI")]
         [System.ComponentModel.Description("The viewmodel to host.")]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public object? ViewModel { get; set; }
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
         public static bool DefaultCacheViewsEnabled { get; set; }
         public event System.ComponentModel.PropertyChangedEventHandler? PropertyChanged;
         public event System.ComponentModel.PropertyChangingEventHandler? PropertyChanging;
diff --git a/src/tests/ReactiveUI.WinForms.Tests/API/ApiApprovalTests.Winforms.DotNet8_0.verified.txt b/src/tests/ReactiveUI.WinForms.Tests/API/ApiApprovalTests.Winforms.DotNet8_0.verified.txt
index 02edf5bce0..2c8860fbd1 100644
--- a/src/tests/ReactiveUI.WinForms.Tests/API/ApiApprovalTests.Winforms.DotNet8_0.verified.txt
+++ b/src/tests/ReactiveUI.WinForms.Tests/API/ApiApprovalTests.Winforms.DotNet8_0.verified.txt
@@ -74,17 +74,17 @@ namespace ReactiveUI.Winforms
         public RoutedControlHost() { }
         [System.ComponentModel.Category("ReactiveUI")]
         [System.ComponentModel.Description("The default control when no viewmodel is specified")]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public System.Windows.Forms.Control? DefaultContent { get; set; }
         [System.ComponentModel.Category("ReactiveUI")]
         [System.ComponentModel.Description("The router.")]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public ReactiveUI.RoutingState? Router { get; set; }
         [System.ComponentModel.Browsable(false)]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public System.IObservable<string>? ViewContractObservable { get; set; }
         [System.ComponentModel.Browsable(false)]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public ReactiveUI.IViewLocator? ViewLocator { get; set; }
         public event System.ComponentModel.PropertyChangedEventHandler? PropertyChanged;
         public event System.ComponentModel.PropertyChangingEventHandler? PropertyChanging;
@@ -112,25 +112,24 @@ namespace ReactiveUI.Winforms
         [System.ComponentModel.Bindable(true)]
         [System.ComponentModel.Category("ReactiveUI")]
         [System.ComponentModel.Description("The Current View")]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public object? Content { get; protected set; }
         public System.Windows.Forms.Control? CurrentView { get; }
         [System.ComponentModel.Category("ReactiveUI")]
         [System.ComponentModel.Description("The default control when no viewmodel is specified")]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public System.Windows.Forms.Control? DefaultContent { get; set; }
         [System.ComponentModel.Browsable(false)]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public System.IObservable<string>? ViewContractObservable { get; set; }
         [System.ComponentModel.Browsable(false)]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public ReactiveUI.IViewLocator? ViewLocator { get; set; }
         [System.ComponentModel.Bindable(true)]
         [System.ComponentModel.Category("ReactiveUI")]
         [System.ComponentModel.Description("The viewmodel to host.")]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public object? ViewModel { get; set; }
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
         public static bool DefaultCacheViewsEnabled { get; set; }
         public event System.ComponentModel.PropertyChangedEventHandler? PropertyChanged;
         public event System.ComponentModel.PropertyChangingEventHandler? PropertyChanging;
diff --git a/src/tests/ReactiveUI.WinForms.Tests/API/ApiApprovalTests.Winforms.DotNet9_0.verified.txt b/src/tests/ReactiveUI.WinForms.Tests/API/ApiApprovalTests.Winforms.DotNet9_0.verified.txt
index 02edf5bce0..2c8860fbd1 100644
--- a/src/tests/ReactiveUI.WinForms.Tests/API/ApiApprovalTests.Winforms.DotNet9_0.verified.txt
+++ b/src/tests/ReactiveUI.WinForms.Tests/API/ApiApprovalTests.Winforms.DotNet9_0.verified.txt
@@ -74,17 +74,17 @@ namespace ReactiveUI.Winforms
         public RoutedControlHost() { }
         [System.ComponentModel.Category("ReactiveUI")]
         [System.ComponentModel.Description("The default control when no viewmodel is specified")]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public System.Windows.Forms.Control? DefaultContent { get; set; }
         [System.ComponentModel.Category("ReactiveUI")]
         [System.ComponentModel.Description("The router.")]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public ReactiveUI.RoutingState? Router { get; set; }
         [System.ComponentModel.Browsable(false)]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public System.IObservable<string>? ViewContractObservable { get; set; }
         [System.ComponentModel.Browsable(false)]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public ReactiveUI.IViewLocator? ViewLocator { get; set; }
         public event System.ComponentModel.PropertyChangedEventHandler? PropertyChanged;
         public event System.ComponentModel.PropertyChangingEventHandler? PropertyChanging;
@@ -112,25 +112,24 @@ namespace ReactiveUI.Winforms
         [System.ComponentModel.Bindable(true)]
         [System.ComponentModel.Category("ReactiveUI")]
         [System.ComponentModel.Description("The Current View")]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public object? Content { get; protected set; }
         public System.Windows.Forms.Control? CurrentView { get; }
         [System.ComponentModel.Category("ReactiveUI")]
         [System.ComponentModel.Description("The default control when no viewmodel is specified")]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public System.Windows.Forms.Control? DefaultContent { get; set; }
         [System.ComponentModel.Browsable(false)]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public System.IObservable<string>? ViewContractObservable { get; set; }
         [System.ComponentModel.Browsable(false)]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public ReactiveUI.IViewLocator? ViewLocator { get; set; }
         [System.ComponentModel.Bindable(true)]
         [System.ComponentModel.Category("ReactiveUI")]
         [System.ComponentModel.Description("The viewmodel to host.")]
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
+        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
         public object? ViewModel { get; set; }
-        [System.ComponentModel.DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Content)]
         public static bool DefaultCacheViewsEnabled { get; set; }
         public event System.ComponentModel.PropertyChangedEventHandler? PropertyChanged;
         public event System.ComponentModel.PropertyChangingEventHandler? PropertyChanging;