Did you ever get to the bottom of this? The same behaviour still exists in the latest version iOS 26. For the time being I have worked round it by creating UIButtons and using these as a custom view for the UIBarButtonItem. This aligns them correctly in the vertical plane at least.

Hi. We have exactly the same problem. Did you manage to resolve this, or did it just work once the app was released in the Mac Store?

I'm getting exactly the same. Did you manage to figure it out?

Did you make any progress with this? Experiencing the same issue here and struggling to find a solution...

Strangely I don't get this error on a physical device running 12.5 or a simulator running 12.4. However the difference could be that my XIB is a Launch Screen. Maybe missing elements are ignored in a Launch Screen since these have no functionality behind them (i.e. they are display only), whereas it forces a crash on an in-app screen. Makes me a bit nervous about releasing, but how do we provide the Scroll Edge appearance for iOS 13+ in a launch screen storyboard otherwise, since there is no way to provide this in code?