Objeto sobreseído mientras ya desasigna; romper objc_overrelease_during_dealloc_error para depurar

Estoy usando strong IBOutlet para IBOutlet personalizado en la subclass NSViewController pero estoy recibiendo crash en 10.11 después de cambiar el controller de vista. Todo está funcionando bien en 10.8,10.9 y 10.10. Estoy usando ARC.

 self.activeRootViewController = controller; self.backgroundWindow.contentView = controller.view; @property (strong) IBOutlet MYPDFView* pdfView; // property inside NSViewController subclass. 

MYPDFVer object 0x10ac1bc50 sobreseído mientras ya desasigna; romper objc_overrelease_during_dealloc_error para depurar

He agregado breakpoint en objc_overrelease_during_dealloc_error pero no objc_overrelease_during_dealloc_error resolver este problema.

¿Por favor, puede alguien ayudarme?

dealloc método dealloc MYPDFView recibe llamadas solo una vez.

Backtrace de lldb:

 objc[23395]: MYPDFView object 0x10ac1bc50 overreleased while already deallocating; break on objc_overrelease_during_dealloc_error to debug Process 23395 stopped * thread #1: tid = 0x11b04b, 0x00007fff926bcb1c libobjc.A.dylib`objc_overrelease_during_dealloc_error, queue = 'com.apple.main-thread', stop reason = breakpoint 1.1 2.1 frame #0: 0x00007fff926bcb1c libobjc.A.dylib`objc_overrelease_during_dealloc_error libobjc.A.dylib`objc_overrelease_during_dealloc_error: -> 0x7fff926bcb1c <+0>: retq 0x7fff926bcb1d <+1>: nop libobjc.A.dylib`objc_object::sidetable_lock: 0x7fff926bcb1e <+0>: movl %edi, %eax 0x7fff926bcb20 <+2>: shrl $0x9, %eax (lldb) bt * thread #1: tid = 0x11b04b, 0x00007fff926bcb1c libobjc.A.dylib`objc_overrelease_during_dealloc_error, queue = 'com.apple.main-thread', stop reason = breakpoint 1.1 2.1 * frame #0: 0x00007fff926bcb1c libobjc.A.dylib`objc_overrelease_during_dealloc_error frame #1: 0x00007fff926bd78a libobjc.A.dylib`objc_object::overrelease_error() + 42 frame #2: 0x00007fff9ad13102 AppKit`-[NSImmediateActionGestureRecognizer dealloc] + 42 frame #3: 0x00007fff9702ce3c CoreFoundation`-[__NSArrayM removeAllObjects] + 252 frame #4: 0x00007fff9a426caf AppKit`-[NSView removeAllGestureRecognizers] + 294 frame #5: 0x00007fff9a4257b3 AppKit`-[NSView _finalizeWithReferenceCounting] + 1333 frame #6: 0x00007fff9a425256 AppKit`-[NSView dealloc] + 151 frame #7: 0x00007fff906ef366 PDFKit`-[PDFView dealloc] + 834 frame #8: 0x000000010003236d MYApp`-[MYPDFView dealloc] + 125 frame #9: 0x00007fff926a6094 libobjc.A.dylib`(anonymous namespace)::AutoreleasePoolPage::pop(void*) + 476 frame #10: 0x00007fff96fc7a72 CoreFoundation`_CFAutoreleasePoolPop + 50 frame #11: 0x00007fff9c7f30fe Foundation`__NSFireDelayedPerform + 441 frame #12: 0x00007fff970119f4 CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20 frame #13: 0x00007fff97011683 CoreFoundation`__CFRunLoopDoTimer + 1075 frame #14: 0x00007fff970111da CoreFoundation`__CFRunLoopDoTimers + 298 frame #15: 0x00007fff970086d1 CoreFoundation`__CFRunLoopRun + 1841 frame #16: 0x00007fff97007d38 CoreFoundation`CFRunLoopRunSpecific + 296 frame #17: 0x00007fff9517dd55 HIToolbox`RunCurrentEventLoopInMode + 235 frame #18: 0x00007fff9517da97 HIToolbox`ReceiveNextEventCommon + 184 frame #19: 0x00007fff9517d9cf HIToolbox`_BlockUntilNextEventMatchingListInModeWithFilter + 71 frame #20: 0x00007fff9a433f3a AppKit`_DPSNextEvent + 1067 frame #21: 0x00007fff9a433369 AppKit`-[NSApplication _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 454 frame #22: 0x00007fff9a427ecc AppKit`-[NSApplication run] + 682 frame #23: 0x00007fff9a3f1162 AppKit`NSApplicationMain + 1176 frame #24: 0x0000000100003452 MYApp`main + 34 frame #25: 0x00007fff8eecc5ad libdyld.dylib`start + 1 frame #26: 0x00007fff8eecc5ad libdyld.dylib`start + 1 (lldb)