You’re not meant to upload whitespace character’s as the name of your game so I assume the ability to do so is considered a bug.
This can be done yourself by copying the white space directly below this message.
EDIT: I have realized I am unable to copy the character in the body of a devforum post. You can try copying it from a pastebin I uploaded it to.
Alternatively you could try inserting them using their character code but I was unable to reproduce it it that way. However it worked 100% the time when copying it.
Here is an image of me using it: