Windows 10 Version 1607 (Anniversary update) - change default logon domain name in the logon screen

Problem Statement:
We found that the Windows 7 and Windows 10 (1607) have different behavior of the GPO -  Interactive logon: Do not display last user name - Enabled

Both machine domain is different from user machine, Windows 10 under abc.com (abc) and Windows 7 under def.com (def)

And the user is under nmo.com (nmo) domain.

After the first time logon, the Windows 7 able to "remember" the user domain (nmo) as the default logon domain for user, but Windows 10 cannot (It keeps abc - the machine domain).

Workaround solution:
We found that we need to add the following registry key:
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System]
"DefaultLogonDomain"="nmo"

Remark:

The problem being fixed on 1703 (15063.608) (This patch level which is I test, maybe it already fixed on early than this patch level on 1703)
What we need to do is enter your domain name (e.g. mno\username) first time login, after that your able to login without enter your domain name again. (Same behavior of Windows 7)

Reference:
https://social.technet.microsoft.com/Forums/windows/en-US/de5fea8e-e327-4d71-a599-546dea543149/change-default-logon-domain-name-in-the-logon-screen?forum=w7itpronetworking

Windows 10 Version 1607 (Anniversary update) - change default logon domain name in the logon screen