Hi again people. The fix is now live, so new users created from now on will have a default name and nickname assigned.
Note that we are not modifying previously created users so if you create a user that does not have one of these properties assigned and you need these properties in place you should delete and recreate the user.
[EDIT]: we reverted a change, so that users will be assigned a default name/nickname on the next login. Moving forward we will ensure that this values are always assigned upon user creation, for greater consistency.