SwiftUI DisclosureGroup不会在LazyVStack内部扩展

Question

我发现了一个问题，在某些情况下，在LazyVStack内部，特别是当内容很长时，DisclosureGroup在点击时不会扩展。这是一个SwiftUI错误，还是我做错了？

下面是一个再现问题的示例(Xcode 14.0.1，iOS 16.0.3)，注意最后7个DisclosureGroup不会展开。

import SwiftUI

struct Entity: Identifiable {
    var id = UUID()
    let header = "HEADER"
    let body = "BODY"
}

struct FoldView: View {
    var entities: [Entity]
    
    init() {
        entities = []
        for _ in 1...30 {
            entities.append(Entity())
        }
    }
    
    var body: some View {
        ScrollView {
            LazyVStack(alignment: .leading) {
                ForEach(entities) { entity in
                        DisclosureGroup {
                            Text(entity.body)
                        } label: {
                            Text(entity.header)
                        }
                    Text("Middle")
                }
            }
            .padding(.horizontal)
        }
    }
}

struct FoldView_Previews: PreviewProvider {
    static var previews: some View {
        FoldView()
    }
}

Answer 1

试试这个，我刚删除了文本(“中间”)

var body: some View {
    ScrollView {
        LazyVStack(alignment: .leading) {
            ForEach(entities) { entity in
                    DisclosureGroup {
                        Text(entity.body)
                    } label: {
                        Text(entity.header)
                    }
            }
        }
        .padding(.horizontal)
    }
}