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iOS navbar largeTitle setting allows the navbar to be automatically collapsed when scrolling. For that to work iOS expects scrollable component to be rendered in the screen view hierarchy as a first children (or just to be looked up on the ancestor path using first children when navigating down). On top of that in RN we should use contentInsetAdjustmentBehavior="automatic" for SV's contentInsets to adjust as expected when the header scrolls and to allow for the SV background to be present below the navigation bar. This works pretty well w/o any changes. However when testing I disovered one issue with the navigation bar rendering in a collapsed state on the first render. After that you could've scroll down to reveal large title bar but the initial state would be collapsed. As on iOS it is expected for large title enabled screens to initially render in the revealed state a workaround was required. It turned out that the header rendered in collapsed state because at the moment when navigation controller is created is has an empty list of view controllers. The list is empty because react first creates nnavigation controller and only then adds children to it. It turned out the fix was to populate viewControllers with a single item at first, then when controllers list is replaced with the children provided from react the header renders properly in the revealed state.