iOS 26 UIBarButtonItems in navigation bar flashing wrong background during push/pop

UI Frameworks UIKit
Vertifi OP
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An iOS app has a UINavigationController with a UINavigationBar that is non-translucent (e.g. black). When performing a push (or pop) to navigate to or from another UIViewController the UIBarButtonItems on the navigation bar are flashing a white background. With a dark navigation bar this is very noticeable and not desirable.

This only occurs when run on iOS 26 and is related to Liquid Glass

I've created FB19660024 with a minimal Xcode workspace to reproduce, along with a video showing the behavior.

This is a cosmetic bug, not affecting functionality, but is a very undesirable effect on apps with dark and non-translucent navigation bars.

Has anyone else seen this and found a workaround?

Replies  3
Boosts 2
Views  885
Participants  2
Claude31 OP

I had issues with BarButtonItems, as described here. https://developer.apple.com/forums/thread/787177

Not exactly the same as yours but background issues as well.
Vertifi OP

This is NOT corrected in Xcode 26 beta 6 / iOS 26 beta 7
Vertifi OP

I've learned that a combination of two things seems to resolve this issue, or at least soften the effects.

For dark UINavigationBar and UIToolbar backgrounds

  1. set barStyle = .black
  2. don't use UINavigationBarAppearance() to set bar colors, just set navigationBar properties colorBarTint, colorBackground, and isTranslucent = false

I'm closing FB19660024, though something definitely not right here ... for example setting the navigation bar title font and color requires use of UINavigationBarAppearance() and these display glitches recur.