diff --git a/Wino.Mail/Dialogs/SignatureEditorDialog.xaml b/Wino.Mail/Dialogs/SignatureEditorDialog.xaml
index 7fb4b40d..6341f820 100644
--- a/Wino.Mail/Dialogs/SignatureEditorDialog.xaml
+++ b/Wino.Mail/Dialogs/SignatureEditorDialog.xaml
@@ -43,7 +43,7 @@
         <Grid Grid.Row="1">
             <Grid.RowDefinitions>
                 <RowDefinition Height="Auto" />
-                <RowDefinition Height="500" />
+                <RowDefinition Height="300" />
             </Grid.RowDefinitions>
 
             <CommandBar
diff --git a/Wino.Mail/Dialogs/SignatureEditorDialog.xaml.cs b/Wino.Mail/Dialogs/SignatureEditorDialog.xaml.cs
index 189ef58f..278f2b8a 100644
--- a/Wino.Mail/Dialogs/SignatureEditorDialog.xaml.cs
+++ b/Wino.Mail/Dialogs/SignatureEditorDialog.xaml.cs
@@ -35,7 +35,7 @@ namespace Wino.Dialogs
 
             SignatureNameTextBox.Header = Translator.SignatureEditorDialog_SignatureName_TitleNew;
             Environment.SetEnvironmentVariable("WEBVIEW2_DEFAULT_BACKGROUND_COLOR", "00FFFFFF");
-            Environment.SetEnvironmentVariable("WEBVIEW2_ADDITIONAL_BROWSER_ARGUMENTS", "--enable-features=OverlayScrollbar,OverlayScrollbarWinStyle,OverlayScrollbarWinStyleAnimation");
+            Environment.SetEnvironmentVariable("WEBVIEW2_ADDITIONAL_BROWSER_ARGUMENTS", "--enable-features=OverlayScrollbar,msOverlayScrollbarWinStyle,msOverlayScrollbarWinStyleAnimation");
 
             // TODO: Should be added additional logic to enable/disable primary button when webview content changed.
             IsPrimaryButtonEnabled = true;
@@ -55,9 +55,8 @@ namespace Wino.Dialogs
                 MailAccountId = signatureModel.MailAccountId,
                 HtmlBody = signatureModel.HtmlBody
             };
-
             Environment.SetEnvironmentVariable("WEBVIEW2_DEFAULT_BACKGROUND_COLOR", "00FFFFFF");
-            Environment.SetEnvironmentVariable("WEBVIEW2_ADDITIONAL_BROWSER_ARGUMENTS", "--enable-features=OverlayScrollbar,OverlayScrollbarWinStyle,OverlayScrollbarWinStyleAnimation");
+            Environment.SetEnvironmentVariable("WEBVIEW2_ADDITIONAL_BROWSER_ARGUMENTS", "--enable-features=OverlayScrollbar,msOverlayScrollbarWinStyle,msOverlayScrollbarWinStyleAnimation");
 
             // TODO: Should be added additional logic to enable/disable primary button when webview content changed.
             IsPrimaryButtonEnabled = true;
diff --git a/Wino.Mail/Views/ComposePage.xaml.cs b/Wino.Mail/Views/ComposePage.xaml.cs
index 33a67689..4c3df606 100644
--- a/Wino.Mail/Views/ComposePage.xaml.cs
+++ b/Wino.Mail/Views/ComposePage.xaml.cs
@@ -59,7 +59,7 @@ namespace Wino.Views
             InitializeComponent();
 
             Environment.SetEnvironmentVariable("WEBVIEW2_DEFAULT_BACKGROUND_COLOR", "00FFFFFF");
-            Environment.SetEnvironmentVariable("WEBVIEW2_ADDITIONAL_BROWSER_ARGUMENTS", "--enable-features=OverlayScrollbar,OverlayScrollbarWinStyle,OverlayScrollbarWinStyleAnimation");
+            Environment.SetEnvironmentVariable("WEBVIEW2_ADDITIONAL_BROWSER_ARGUMENTS", "--enable-features=OverlayScrollbar,msOverlayScrollbarWinStyle,msOverlayScrollbarWinStyleAnimation");
         }
 
         private static async void OnIsComposerDarkModeChanged(DependencyObject obj, DependencyPropertyChangedEventArgs args)
diff --git a/Wino.Mail/Views/MailRenderingPage.xaml.cs b/Wino.Mail/Views/MailRenderingPage.xaml.cs
index 5b18de9c..0b09fae0 100644
--- a/Wino.Mail/Views/MailRenderingPage.xaml.cs
+++ b/Wino.Mail/Views/MailRenderingPage.xaml.cs
@@ -42,7 +42,7 @@ namespace Wino.Views
             InitializeComponent();
 
             Environment.SetEnvironmentVariable("WEBVIEW2_DEFAULT_BACKGROUND_COLOR", "00FFFFFF");
-            Environment.SetEnvironmentVariable("WEBVIEW2_ADDITIONAL_BROWSER_ARGUMENTS", "--enable-features=OverlayScrollbar,OverlayScrollbarWinStyle,OverlayScrollbarWinStyleAnimation");
+            Environment.SetEnvironmentVariable("WEBVIEW2_ADDITIONAL_BROWSER_ARGUMENTS", "--enable-features=OverlayScrollbar,msOverlayScrollbarWinStyle,msOverlayScrollbarWinStyleAnimation");
             NavigationCacheMode = NavigationCacheMode.Enabled;
         }