Open Radar

 
Summary:
The tintColor of the UIButton will be changed (gets resetted) to the UIWindow's tintColor when pushing a new UIViewController on the UINavigationController stack.

This bug occurs on iPad with a modal presented UINavigationController with modalPresentationStyle UIModalPresentationFormSheet

Steps to Reproduce:
1. Set the UIWindow tintColor to red
2. present a UINavigationController modally with UIModalPresentationFormSheet style
3. The rootViewController of the UINavigationController contains a button that pushes a new UIViewController
4. this button has a tintColor and an image.
5. Tap the button ("X") in order to push the new UIViewController
6. Go back in the navigationController stack
7. The button color will change to red (from white)

see attached example project
 

Expected Results:
The tintColor of the UIButton should remain as configured and should NOT change when pushing a viewController and popping on the UINavigationController.

The color of the button must remain white when going back.

Actual Results:
The button's color will change to red.

see attached example project

Version:
iOS 8 and iOS 9 

Notes:
Tried with Xcode 6.4  and 7.0 beta 5 (7A176x)

See example:
https://github.com/tapwork/TintColorBug/