Drive is not using proxy settings to resolve username

I got this issue with our sharp DS client, but found the problem is inherited from latest Nuxeo Drive. Here are the steps:

1. Install and configure Drive
2. edit a file in both server and client side simultaneously so that drive shows conflict with sync.
3. Open system tray menu
4. Click on conflicts, which will result in opening of conflicts dialog
   Result: The conflicts window shows userid instead of user-name
   Expected Result: The conflict window should show the user full name for every conflict.