RDP Client: "screen mode id:i:1" in user name field

After successfull connection to a host, the user name field is filled with wrong value.

It looks like this string is saved in "C:\Default.rdp" file, and one line break is missing.

How to reproduce:

1. Start mstsc & connect to a RDP host (with empty user name)
2. Disconnect without logging in
3. Start mstsc again