NSFetchedResultsController XCode 7 issue

Question

Xcode 7 beta 6 and and NSFetchedResultsController gave me headache today. If I compile same(with Swift 2 fixes) code with Xcode 6, program works on device and simulators(iOS 7,

Answer 1

I did not see this problem any more when I build upon SDK 9.1. It seems the bug have been fixed. You can try it.