Navigation bar height presented from second window doesn't change when moving between compact and standard size

Originator:bsuvorov
Number:rdar://20167526 Date Originated:15-MAR-2015
Status:Open Resolved:
Product:iOS Product Version:
Classification: Reproducible:always
 
Summary:
See quick demo here: https://github.com/bsuvorov/ios_bug_demos#ios-navigation-bar-height-rotation-bug

Apple HID states: "iOS automatically makes various layout changes when the size classes of a display environment change. For example, when the vertical size class changes from compact to regular, navigation bars and toolbars automatically become taller."

In attached GIF file you can observe how one navbar changes its height to 32, while another one doesn't change height to 32.

Navbar that sticks to 44pt height is part of second window and belongs to UINavigationViewController that is rootViewController for the second window.

Interestingly toolbar height does change and works correctly

This behavior leads to inconsistent UI layouts and forces devs to remove/add navigation bar as a workaround during rotation handling.

Steps to Reproduce:
1. Take sample app from here: https://github.com/bsuvorov/ios_bug_demos/tree/master/iOS8_navigation_bar_height_bug

2. Run it on iOS8 simulator.
3. Rotate simulator.
4. Bug just reproduced

Expected Results:
Navigation bar presented in second window should change its height when going from standard mode to compact and vice versa.

Actual Results:
Navigation bar presented in second window sticks to height it was presented with for the first time. if size was standard it'll be 44. if size was compact it'll stay 32.

Notes:
See quick demo here: https://github.com/bsuvorov/ios_bug_demos#ios-navigation-bar-height-rotation-bug

Comments

Marked as dupe of 16790815, not clear if 16790815 was closed.

By bsuvorov at April 8, 2015, 6:34 a.m. (reply...)

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