iOS 9 only UITableView crash on launch

Question

I'm struggling to identify the source of a crash I'm seeing only on iOS 9. I'm seeing 40-ish crash reports from various models of iPhone, but never on the iPad. I've crawled through my entire Storyboard, UITableView by UITableView, and all of them have their delegate and datasource outlets properly connected to their owning UITableViewController. No instances of this crash on anything earlier than iOS 9.Anybody out there see a crash like this, or know what changes in iOS 9 might be causing it?Application Specific Information:*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'UITableView dataSource is not set'Last Exception Backtrace:0   CoreFoundation                       0x0000000182ce7f94 __exceptionPreprocess + 1241   libobjc.A.dylib                      0x000000019768bf2c objc_exception_throw + 522   CoreFoundation                       0x0000000182ce7e64 +[NSException raise:format:arguments:] + 1043   Foundation                           0x0000000183c1bab4 -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 1084   UIKit                                0x0000000188635b40 -[UITableView _createPreparedCellForGlobalRow:withIndexPath:willDisplay:] + 6045   UIKit                                0x0000000188635ce8 -[UITableView _createPreparedCellForGlobalRow:willDisplay:] + 766   UIKit                                0x0000000188626890 -[UITableView _updateVisibleCellsNow:isRecursive:] + 26487   UIKit                                0x000000018863a910 -[UITableView _performWithCachedTraitCollection:] + 1008   UIKit                                0x00000001883e3e78 -[UITableView layoutSubviews] + 1729   UIKit                                0x00000001882f64fc -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 62010  QuartzCore                           0x0000000187b32d04 -[CALayer layoutSublayers] + 14411  QuartzCore                           0x0000000187b2d920 CA::Layer::layout_if_needed(CA::Transaction*) + 28812  QuartzCore                           0x0000000187b2d7e0 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 2813  QuartzCore                           0x0000000187b2ce80 CA::Context::commit_transaction(CA::Transaction*) + 24814  QuartzCore                           0x0000000187b2cbd4 CA::Transaction::commit() + 51215  QuartzCore                           0x0000000187b2634c CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) + 7616  CoreFoundation                       0x0000000182c9ef44 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 2817  CoreFoundation                       0x0000000182c9ccbc __CFRunLoopDoObservers + 36818  CoreFoundation                       0x0000000182c9d0ec __CFRunLoopRun + 92419  CoreFoundation                       0x0000000182bc9800 CFRunLoopRunSpecific + 38020  GraphicsServices                     0x000000018dc57170 GSEventRunModal + 17621  UIKit                                0x00000001883625e8 UIApplicationMain + 20022  Lightbow                             0x000000010005ee20 main (main.m:16)23  libdyld.dylib                        0x0000000197ec68b8 start + 0

dds.timothy · Answer

I encountered the same issue when popping a view controller that contained a tableview to return to another view controller with a tableview, with the ANIMATED parameter set to NO.i.e. calling either of the methods below:[self.navigationController popViewControllerAnimated:NO][self.navigationController popToViewController:aViewController animated:NO];When I set ANIMATED to YES, the crash disappeared. The tableview datasources were always set through a .xib, and this was also occurring only on iOS 9.