If you're implementing child view controllers and want automaticallyAdjustsScrollViewInsets to work...

workaround.m

            // This ensures that the automaticallyAdjustsScrollViewInsets magic works
            // On our newly added view controller as well.
            // This triggers _layoutViewController which then triggers
            // _computeAndApplyScrollContentInsetDeltaForViewController:
            // which finally updates our content inset of the scroll view (if any)
            // rdar://19053416
            [self.navigationController.view setNeedsLayout];

OMG thank you. Hashtag Apple's software quality.

Can not believe this works. Thank you! 🙏

Still necessary in 2017. Thanks!

I put this line after

viewController.didMove(toParentViewController: self)
navigationController?.view.setNeedsLayout()

and it works like a magic.

Thanks! It works perfectly.