diff --git a/CHANGELIST.md b/CHANGELIST.md
index 891ebb6b..8cea73e6 100644
--- a/CHANGELIST.md
+++ b/CHANGELIST.md
@@ -37,6 +37,7 @@
 - Get UI building with Framework 4.0
 - Temporarily remove .NET Framework 4.0 from UI
 - Get UI building with Framework 4.0 again
+- Support .NET Framework 3.5 in UI
 
 ### 3.0.0 (2023-11-14)
 
diff --git a/MPF.Core/UI/ViewModels/OptionsViewModel.cs b/MPF.Core/UI/ViewModels/OptionsViewModel.cs
index 6e4f71ec..6b1ae5d3 100644
--- a/MPF.Core/UI/ViewModels/OptionsViewModel.cs
+++ b/MPF.Core/UI/ViewModels/OptionsViewModel.cs
@@ -11,7 +11,7 @@ namespace MPF.Core.UI.ViewModels
     /// <summary>
     /// Constructor
     /// </summary>
-    public class OptionsViewModel(Options baseOptions) : INotifyPropertyChanged
+    public class OptionsViewModel : INotifyPropertyChanged
     {
         #region Fields
 
@@ -32,7 +32,7 @@ namespace MPF.Core.UI.ViewModels
         /// <summary>
         /// Current set of options
         /// </summary>
-        public Options Options { get; } = new Options(baseOptions);
+        public Options Options { get; }
 
         /// <summary>
         /// Flag for if settings were saved or not
@@ -58,6 +58,22 @@ namespace MPF.Core.UI.ViewModels
 
         #endregion
 
+        /// <summary>
+        /// Constructor for pure view model
+        /// </summary>
+        public OptionsViewModel()
+        {
+            Options = new Options();
+        }
+
+        /// <summary>
+        /// Constructor for in-code
+        /// </summary>
+        public OptionsViewModel(Options baseOptions)
+        {
+            Options = new Options(baseOptions);
+        }
+
         #region Population
 
         /// <summary>
diff --git a/MPF.UI.Core/Windows/OptionsWindow.xaml b/MPF.UI.Core/Windows/OptionsWindow.xaml
index 96a94241..4ece2e01 100644
--- a/MPF.UI.Core/Windows/OptionsWindow.xaml
+++ b/MPF.UI.Core/Windows/OptionsWindow.xaml
@@ -5,11 +5,15 @@
                         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
                         xmlns:core="clr-namespace:MPF.UI.Core"
                         xmlns:coreWindows="clr-namespace:MPF.UI.Core.Windows"
+                        xmlns:viewModels="clr-namespace:MPF.Core.UI.ViewModels;assembly=MPF.Core"
                         mc:Ignorable="d"
                         Width="515.132" WindowStyle="None"
                         WindowStartupLocation="CenterOwner" ResizeMode="CanMinimize" SizeToContent="Height"
                         BorderBrush="DarkGray" BorderThickness="2">
 
+    <Window.DataContext>
+        <viewModels:OptionsViewModel/>
+    </Window.DataContext>
     <Window.Resources>
         <core:ElementConverter x:Key="ElementConverter" />
     </Window.Resources>
@@ -27,14 +31,8 @@
                 </Grid.ColumnDefinitions>
 
                 <Image Grid.Column="0" Source="/Images/Icon.ico" Height="20" Width="20" Margin="1" />
-                <Label Grid.Column="1" Grid.ColumnSpan="4" HorizontalAlignment="Stretch" HorizontalContentAlignment="Center" MouseDown="TitleMouseDown">
-                    <Label.Content>
-                        <TextBlock>
-                            <TextBlock.Inlines>
-                                <Run FontWeight="Bold" Text="{Binding Title, Mode=OneWay}"/>
-                            </TextBlock.Inlines>
-                        </TextBlock>
-                    </Label.Content>
+                <Label Grid.Column="1" Grid.ColumnSpan="4" HorizontalAlignment="Stretch" HorizontalContentAlignment="Center" MouseDown="TitleMouseDown"
+                       Content="{Binding Path=Title, Mode=OneWay}" FontWeight="Bold">
                     <Label.ContextMenu>
                         <ContextMenu Background="{DynamicResource {x:Static SystemColors.WindowBrushKey}}"
                                      Foreground="{DynamicResource {x:Static SystemColors.WindowTextBrushKey}}"
diff --git a/MPF/App.xaml b/MPF/App.xaml
index 2ebb32e2..63ad7942 100644
--- a/MPF/App.xaml
+++ b/MPF/App.xaml
@@ -232,7 +232,7 @@
             <Setter Property="MinWidth" Value="0"/>
             <Setter Property="MinHeight" Value="0"/>
             <Setter Property="FocusVisualStyle" Value="{x:Null}"/>
-            <Setter Property="ScrollViewer.PanningMode" Value="VerticalFirst"/>
+            <!--<Setter Property="ScrollViewer.PanningMode" Value="VerticalFirst"/>--> <!-- Not supported in .NET Framework 3.5 -->
             <Setter Property="Stylus.IsFlicksEnabled" Value="False"/>
             <Setter Property="Template">
                 <Setter.Value>
@@ -280,7 +280,7 @@
             <Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto"/>
             <Setter Property="Padding" Value="6,3,5,3"/>
             <Setter Property="ScrollViewer.CanContentScroll" Value="true"/>
-            <Setter Property="ScrollViewer.PanningMode" Value="Both"/>
+            <!--<Setter Property="ScrollViewer.PanningMode" Value="VerticalFirst"/>--> <!-- Not supported in .NET Framework 3.5 -->
             <Setter Property="Stylus.IsFlicksEnabled" Value="False"/>
             <Setter Property="Template" Value="{DynamicResource ComboBoxTemplate}"/>
             <Style.Triggers>
@@ -336,7 +336,8 @@
                     <Popup x:Name="PART_Popup" AllowsTransparency="True" Focusable="False" IsOpen="{Binding IsSubmenuOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{DynamicResource {x:Static SystemParameters.MenuPopupAnimationKey}}" Placement="Bottom">
                         <Border x:Name="SubMenuBorder" BorderBrush="{DynamicResource MenuItem.SubMenu.Border}" BorderThickness="1" Background="{DynamicResource MenuItem.SubMenu.Background}" Padding="2">
                             <ScrollViewer x:Name="SubMenuScrollViewer" Style="{DynamicResource {ComponentResourceKey ResourceId=MenuScrollViewer, TypeInTargetAssembly={x:Type FrameworkElement}}}">
-                                <Grid RenderOptions.ClearTypeHint="Enabled">
+                                <!-- Grid RenderOptions.ClearTypeHint="Enabled">--> <!-- Not supported in .NET Framework 3.5 -->
+                                <Grid>
                                     <Canvas HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0">
                                         <Rectangle x:Name="OpaqueRect" Fill="{Binding Background, ElementName=SubMenuBorder}" Height="{Binding ActualHeight, ElementName=SubMenuBorder}" Width="{Binding ActualWidth, ElementName=SubMenuBorder}"/>
                                     </Canvas>
@@ -387,7 +388,8 @@
                 <Setter.Value>
                     <ControlTemplate TargetType="{x:Type ProgressBar}">
                         <Grid x:Name="TemplateRoot">
-                            <VisualStateManager.VisualStateGroups>
+                            <!-- Not supported in .NET Framework 3.5 -->
+                            <!--<VisualStateManager.VisualStateGroups>
                                 <VisualStateGroup x:Name="CommonStates">
                                     <VisualState x:Name="Determinate"/>
                                     <VisualState x:Name="Indeterminate">
@@ -405,7 +407,7 @@
                                         </Storyboard>
                                     </VisualState>
                                 </VisualStateGroup>
-                            </VisualStateManager.VisualStateGroups>
+                            </VisualStateManager.VisualStateGroups>-->
                             <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}"/>
                             <Rectangle x:Name="PART_Track"/>
                             <Grid x:Name="PART_Indicator" ClipToBounds="true" HorizontalAlignment="Left">
diff --git a/MPF/MPF.csproj b/MPF/MPF.csproj
index d5006563..87596ff2 100644
--- a/MPF/MPF.csproj
+++ b/MPF/MPF.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <!-- Assembly Properties -->
-    <TargetFrameworks>net40;net452;net462;net472;net48;netcoreapp3.1;net5.0-windows;net6.0-windows;net7.0-windows;net8.0-windows</TargetFrameworks>
+    <TargetFrameworks>net35;net40;net452;net462;net472;net48;netcoreapp3.1;net5.0-windows;net6.0-windows;net7.0-windows;net8.0-windows</TargetFrameworks>
     <RuntimeIdentifiers>win-x86;win-x64</RuntimeIdentifiers>
     <OutputType>WinExe</OutputType>
     <ApplicationIcon>Images\Icon.ico</ApplicationIcon>