Long story short: The minor issue is that the hostname is not set properly, the major issue though is that booting the system is delayed by a minute or so and a systemd unit will fail. People are working on a solution already and it will be in place before F19 is going to be released (i.e. the issue is considered a release blocker).
Note that it should not have any other impact and seems to work very well otherwise. That said, further testing would be much appreciated.