Username still showing old name on a question
19126
Old usernames stick to Community Wiki posts
20778
Comment submission broken for comments that end with @username
99513
postfix - how to prevent users from sending with another users name
126400
Active Question lists - Name should reflect original poster (and editor if exists)
86451
Are usernames required to be unique?
13493
Last activity on question shows modified by user who did not ask or answer
33666
How do I change my Minecraft username during the 30-day restriction?
24316
Usernames vs. Real Names
112760
Bug when marking a question as duplicate
115301
Can I Prevent Enumeration of Usernames?
137466
Etiquette for username changes
9805
Last activity name still missing from migrated question
8807
How do I change my username?
62853
Why does "deleted recent questions" not appear for users who have asked only one question?
144954
Reputation not appearing on username flyout
129972
Cannot edit question without also changing the title
112724
Lost reputation points, when user asking the question no longer exists