Every now and again an Apple person will pop up on the Xcode mailing list to tell people to submit a bug report on Radar. They sometimes also reassure all that,

Every now and again an Apple person will pop up on the Xcode mailing list to tell people to submit a bug report on Radar. They sometimes also reassure all that, yes, despite all evidence to the contrary, bug reports DO get read - though I note that they are always extremely careful to promise no more than that.