ThinOS 9.X Direct RDP Connection with empty hostname

We have various thin clients around our buildings that can be used by employees to connect back to their desk PCs via RDP.  In ThinOS 8.6 and prior we were able to do this by configuring a direct rdp connection with “” in the hostname field.  This allowed the user to simply enter their computername into the hostname field when they launched the RDP connection.  In ThinOS 9.x it no longer allows an empty field for hostname from what I can tell in WMS.  Can anyone either tell me how to do this or think of a workaround?  Thank you for your time.