Sub connections are not appearing

I have a problem where I create a sub-connection and it adds correctly, but it never appears as a sub-connection on the parent Sub Connections tab. I can duplicate this behavior using all methods to create sub connections. For example.

1. Highlight a connection and right click and select Add.
2. Chose New Sub Connection from the dialog box that appears.
3. Enter the connection... In my case I'm adding a powershell sub connection to launch a program.
4. Click OK to save the sub-connection.
5. Note this takes you back to the parent connection and the sub connection is not visible.
6. If you hit OK on the parent connection, the sub connection will appear in the tree under the parent.

If you edit the parent you cannot see the sub connection. If you delete the sub connection using Ctrl+Del it does nothing the first time you delete it, but will disappear the second time it is deleted. If you attempt to edit the sub connection, it will open the parent connection and take you to the Sub Connections tab, but the sub connection edit window never appears. This ultimately is the problem I need to address because I have to remove and re-add every sub connection if it needs to be modified.

Do you have any ideas what is causing this behavior?