I've created an app with standart template Master-Detail in Xcode 9. I can't understand why there is only master controller in iPhone X simulator? iPhone 6,7,8 Plus have both master and detail. I alse tride to make all visible
[splitViewController setPreferredDisplayMode: UISplitViewControllerDisplayModeAllVisible];
but it does not work. I did not find and and info in Fall 2017 - Session 801 vide and in updated HIG for iPhone X.
Could you explain is it a new pattern or a just a bug in simulator?