Implement a workaround for dotnet/wpf#1718

src/Directory.Build.props

@@ -1,5 +1,15 @@
 <!-- Copyright (c)  Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information. -->
 <Project>  
+  <PropertyGroup>
+    <!-- 
+        When markup compilation is involved, WPF generates .g.cs files via the GenerateTemporaryTargetAssembly task. 
+        These do not always have the correct full-paths to their respective .xaml files annotated in them in the #line
+        directives. This can cause compile errors if these files are included in Source Link. 
+        https://github.com/dotnet/wpf/issues/1718
+    -->
+    <EmbedUntrackedSources>false</EmbedUntrackedSources>
+  </PropertyGroup>
+
   <Import Project="Sdk.props" Sdk="Microsoft.DotNet.Arcade.Sdk" />
 
   <PropertyGroup Condition="'$(CopyrightMicrosoft)' != ''">