为什么第二个@State 变量会使我的程序在 SwiftUI 中崩溃

Question

import SwiftUI
import CoreData


struct AddTaskView: View {
    
    @Environment(\.managedObjectContext) private var viewContext
    @Environment(\.presentationMode) var presentationMode
    
    @FetchRequest(entity: Task.entity(), sortDescriptors: [])
    var tasks: FetchedResults<Task>
    
    @FetchRequest(entity: DailyScore.entity(), sortDescriptors: [NSSortDescriptor(key: "date", ascending: false)])
    var scores: FetchedResults<DailyScore>
    
    let types = ["Exercise", "German", "Cold Shower", "Fast Food"]
    
    @State var selectedTaskIndex = 0
    @State var newType = ""
    
    var body: some View {

我不明白为什么@State var newType = ""会导致程序崩溃。 （并且它与使用无关，因此据我所知这无关紧要）

Answer 1

更新：这似乎只是一个 Xcode 错误。