... that you may look at their accounts confused & wonder 'I've never Seen That Username before! ( their new username ) - Am I following That? :/ '

- It happened to me ( Seeing the new username & not Recognising the account because it all changed ) quite many times already 

🔷 ...  So if You're one of Such 'Fast Account & Username Changers' YOURSELF

- Please at least leave a Conversations message 'It's me ( your old username ) ' - I've changed my username'

- to let Your Followers know that It's YOU! 😁

TY :)