If I am commenting and want to reference another user, sometimes when I use @[username], I get a clickable pop-up with their username, other times I do not.
Some Meta questions indicate that @ isn't needed anymore.
Is there old / new / draft guidance on the "correct" way to reference a user in comments?
The correct way is
@username with at least 3 uniquely identifying characters following the @.
You can only ping (reference) one user different from the OP.
The OP themselves can only be pinged (for clarity) if no other user commented yet.
To reference a user, you have to use @username
@ is needed.
Also note that the Post Owner will be notified about your comment even if you didn't mentioned them.
Who are all the persons you can mention
