This user made a username with a space in it, is it a bug?
This user created a @ username with a space in it… how?!
https://www.ifixit.com/User/2252375/My+N...
Update (12/09/2018)
Nope, you cant have a username with a space in it
It makes the username unmentionable and you end up mentioning a different user instead.
Is this a good question?