Your in gamer name syncs with your Steam ID every time you log in.
This change was introduced in Hotfix 5.18 Notes can be found here. - August 26, 2015
How do I change my in-game name?
Your in gamer name syncs with your Steam ID every time you log in.
This change was introduced in Hotfix 5.18 Notes can be found here. - August 26, 2015