UPDATE : Here is a code example with PhotosPicker not appearing in "half size" AND working "half size" sheet presentation import SwiftUI import PhotosUI struct ContentView: View {   @State private var showingCredits = false   @State private var selectedItem: PhotosPickerItem? = nil   @State private var selectedImageData: Data? = nil   var body: some View {     VStack {       PhotosPicker(         selection: $selectedItem,         matching: .images,         photoLibrary: .shared()) {           Text("Open PhotosPicker")             .presentationDetents([.medium, .large])         }         .onChange(of: selectedItem) { newItem in           Task {             // Retrieve selected asset in the form of Data             if let data = try? await newItem?.loadTransferable(type: Data.self)             {               selectedImageData = data             }           }         }       if let selectedImageData,         let uiImage = UIImage(data: selectedImageData) {         Image(uiImage: uiImage)           .resizable()           .scaledToFit()           .frame(width: 250, height: 250)       }       Divider()       Button("Open sheet in half screen") {         showingCredits.toggle()       }       .sheet(isPresented: $showingCredits) {         Text("Hello there!")           .presentationDetents([.medium, .large])       }     }   } } struct ContentView_Previews: PreviewProvider {   static var previews: some View {     ContentView()   } }