update doc

README.md

@@ -115,6 +115,14 @@ large directory like ControlPlane.
 
 It's easier to only build the small project that you're working on. 
 
+- OpenXT-built CIS workflow fails to run on CIS beta site.
+
+CIS isn't fully happy with .NET 5. You should do the following manually: 
+
+1. Make sure you have copied *.xaml to the output directory. 
+2. You must delete all *.pdb file from the output directory. (or build a release/retail version instead of debug version)
+
+
 ## Bug report
 
 If you have no permission to submit a issue, feel free to email bensl@microsoft.com to report a bug.