hey alex,
the name field that you asked for is displaying the emailadress of the google account. this also results that when "send email" is enabled the registration mail text for the users start with hello
This email address is being protected from spambots. You need JavaScript enabled to view it.,
I went through the google login process with all 4 prefix formats so that I have some data to share with you - as said all use the auto-registration and the google user doesn't have a google+ profile. results:
email and fb_, g_ were successful, a new joomla user was created (message: Google profile successfully connected.)
email prefix: name:
This email address is being protected from spambots. You need JavaScript enabled to view it. / username:
This email address is being protected from spambots. You need JavaScript enabled to view it.
fb_, g_ prefix: name:
This email address is being protected from spambots. You need JavaScript enabled to view it. / username: g_116783935303174179854
the other 2 methods were not successful at all, no new user was created.
at first.last prefix I receive this error message: Please enter a valid username. No spaces, at least 2 characters and must not contain the following characters: < > \ " ' % ; ( ) &
at firlas prefix I get this one: Please enter a user name.
hope that helps