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Prior to iOS 26, we could set the color of iOS's back button (at left of nav bar) using the line:
navigationController?.navigationBar.tintColor = UIColor.red
This is not working for me in iOS 26. Anyone get this to work?
We can change the tintColor of individual toolbar items that we add, but the back button is system generated.
Unfortunately iOS 26 no longer honors any tintColor set at the UIWindow, UINavigationBar, or UIToolbar level for any glass components. So this includes any UIBarButtomItems including standard back bar items. As you've seen, you can only tint individual bar button items.
Everyone affected by this should file a bug report using Feedback Assistant so Apple knows that this needs to be fixed.
Thanks Rick for the feedback. I filed a bug report: FB18072605
"Being able to change both the line color and the background tint color of the back bubble would seem to be important options."