I just tested an install of F19 Beta TC4, KDE from the DVD, and created an admin user but did not set the root password during the last phase of anaconda. On boot of the installed system, initial-setup shows "Administrator test will be created" under USER CREATION (which is correct), but "Root password was set by kickstart" under ROOT PASSWORD, even though I did not set a root password.
This should be fixed for a while now, not sure about the exact build, but it the anaconda-19.30.6-1 definitely contains the patch.
Oh, indeed, in TC5 it reads 'Root password is set'. That's fine. 19.30.8 was pushed stable already, so closing.