Thers are tons of people using this platform, and many of them are doing very obscure things with it. Meanwhile, that same bug tracking system is used by Apple's Q/A and the very engineers working on the code in the first place. You might thing the bug is something only you would find, but with this many people staring at it, someone else probably came across it. As many ways as I feel Apple is slightly disingenuous, I really can't imagine they have a policy of making up bug numbers in Radar so they can mark things as duplicates.