NavigationTitle does not change when the app language changes. It works well in iOS 17.5 but does not in iOS 18.x
SwiftUI NavigationTitle does not support Localization in iOS 18
The issue you described doesn't happen on my testing app, which uses the standard SwiftUI localization mechanism.
The screenshots you provided seem to indicate that you have an in-app option that allows users to change the app language. If that is the case, please share how you implemented it and I may have more to say. Or if you can provide a minimal project, with detailed steps that reproduce the issue, I may be able to take a look and comment.
Best,
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Ziqiao Chen
Worldwide Developer Relations.