SwiftUI 列表中神秘的前导/尾随填充？

Question

Inside my SwiftUI List view are scrollable posts that have a mysterious leading & trailing padding that I cannot figure out where is coming from? (See image encircled in blue)

I want the post images to extend all the way to the edges of the phone screen so there is no white-space at all.

I put a background Color of red on my PostCell, and as you can see in the image, the padding doesn't appear to be coming from the PostCell because you see the leading/trailing white padding on either side of it.

Below is my complete view hierarchy as is in my app and there is no padding, which seems to be about 30 points, anywhere in the hierarchy.

I am assuming this padding is being applied by default somewhere??

Any ideas on how to get rid of this padding?

ROOT VIEW

struct RootView: View {
    var body: some View {
        TabView {
            // OTHER VIEW
            // OTHER VIEW
            // OTHER VIEW
            // OTHER VIEW
            ProfileView(profileVM: ProfileViewModel())
        }
    }
}

PARENT VIEW

struct ProfileView: View {
    @StateObject var profileVM: ProfileViewModel
    @State private var presentSettings: Bool = false

    var body: some View {
        NavigationView {
                List {
                    ProfileContent(profileVM: profileVM)
                }
                .clipped()
                .listStyle(PlainListStyle())
                .refreshable {
                    Task.detached { await profileVM.loadData() }
                }
                .navigationViewStyle(StackNavigationViewStyle())
                .navigationBarTitle(Text(""), displayMode: .inline)
                .background (
                    NavigationLink("", destination: ListView(profileVM: profileVM), isActive: $profileVM.presentPostView).isDetailLink(false)
                )
        }
    }
}

CHILD VIEW

struct ListView: View {
    @Environment(\.presentationMode) var presentation
    @ObservedObject var profileVM: ProfileViewModel
        
    var body: some View {
        ScrollViewReader { proxy in
            List(profileVM.usersPosts, id: \.id) { post in
                PostCell(post: post)
                    .background(Color.red)
            }
            .clipped()
            .listStyle(PlainListStyle()) 
            .navigationViewStyle(StackNavigationViewStyle())
            .navigationBarTitle(Text("your posts"), displayMode: .inline)
            .navigationBarBackButtonHidden(true)
            .toolbar(content: {
                ToolbarItem(placement: .navigationBarLeading) {
                    ZStack {
                        Button(action: {print("action")}, label: {Text("Press")})
                    }.padding(.leading, 10)
                }
            })
        } 
    }
}

Answer 1

I assume you need to zero list row insets

PostCell(post: post)
    .background(Color.red)
    .listRowInsets(EdgeInsets())   // << here !!