MapKit MapReader Not working on iOS 26

I have the following code snippet with a simple map and map reader that shows a pin on the map when the user selects a location

struct MapReaderTest: View {
    @State private var loc: CLLocationCoordinate2D? = nil
    
    var body: some View {
        MapReader { proxy in
            Map {
                UserAnnotation()
                
                if let loc {
                    Marker(coordinate: loc, label: { Text("Marker") })
                }
            }
            .onTapGesture { position in
                let position = proxy.convert(position, from: .local)
                loc = position
            }
        }
    }
}

This snippet compiles and works perfectly fine using Xcode version 16.4 building for iOS 18.0 and running on a device. This snippet also works for me when I build using Xcode 26 Beta and run in the canvas or simulator, however it does not work when I compile using Xcode 26 and run it on a physical device(I built and tested for both iOS 18.6 and iOS 26 Beta)

Has anyone else had a similar issue / have any ideas for work arounds?