Open Radar

 
Summary:
Our app customizes the UINavigationBar barTintColor and UIBarButtonItem tintColor to fit with the theme of our app. When a UIBarButtonItem is placed in a navigation bar with certain tint colors while Button Shapes is enabled, the background color of the button obscures the text of the button.

Steps to Reproduce:
1. Create a UIViewController in a UINavigationController
2. - (void)viewDidLoad {
    [super viewDidLoad];
    self.navigationController.navigationBar.barTintColor = [UIColor colorWithRed:0.784 green:0.796 blue:0.820 alpha:1.000];
    self.navigationItem.rightBarButtonItem = self.editButtonItem;
    self.editButtonItem.tintColor = [UIColor colorWithRed:0.068 green:0.125 blue:0.171 alpha:1.000];
}
3. You can't read the text on the button when Button Shapes is enabled.

Expected Results:
The button's background color should not obscure the text/tint color of the button label.

Actual Results:
The button's background color is very dark, much darker than if no bartTintColor is set.

Version:
iOS 7.1

As a followup, I've noticed that this only happens when translucent is set to true for the UINavigationBar in question, so it appears to somehow be related to the navigation bar's transparency.