swiftui - SwiftUI 找不到 ObservableTest 类型的 ObservableObject。ObservableTest 的 View.environmentObject(_:) 作为该视图的祖先可能会丢失

Question

要重现问题，请使用以下代码并执行以下操作步骤：

1. 点击TestB View两次，
2. 向下滚动关闭页面，过程中会出现上述问题。

import SwiftUI

@main
struct SwiftUIStudyApp: App {
    @State private var isShow: Bool = false
    var body: some Scene {
        WindowGroup {
            TestA().environmentObject(ObservableTest())
        }
    }
}


class ObservableTest: ObservableObject {
    @Published var test: Bool = false
}

struct TestA: View {
    @State var show: Bool = false
    var body: some View {
        VStack(alignment: .center, spacing: 0, content: {
            Spacer()
            Text("next")
                .onTapGesture {
                    show.toggle()
                }
            Spacer()
        })
        .sheet(isPresented: $show, content: {
            TestB()
        })
    }
}
struct TestB: View {
    
    @EnvironmentObject var object: ObservableTest

    var body: some View {
        VStack(alignment: .center, spacing: 0, content: {
            RoundedRectangle(cornerRadius: 25.0)
                .fill(object.test == true ? Color.red : Color.green)
                .onTapGesture {
                    object.test.toggle()
                }
        })
    }
}