no issue ,that is NOT a bug
BUT a security measure added back in fedora 11 ( fedora 9 & 10 had warnings )
and is VERY VERY VERY WELL documented .( I take it you have
not read the fedora documentation )
http://docs.fedoraproject.org/en-US/index.html
DO NOT login as root into a GUI !!!!!!!!!!
there is a hack BUT IT IS NOT RECOMMENDED!!!! and has some very bad "unexpected consequences " if used . -- do NOT use it .