Attachment layer hidden behind visionOS app window in immersive space

Hello,

To me, it does not seem to be entirely clear why, when I'm trying to display my attachment, no matter the positioning, it will always be hidden/covered by my visionOS app window. I'm trying to achieve displaying the attachment one layer above/in front of the window. When my head isn't directed towards the window I can see the attachment but else it's covered by it.

I appreciate any help!

ContentView.swift

import SwiftUI
import RealityKit

struct ContentView: View {
    
    @Environment(\.openImmersiveSpace) private var openImmersiveSpace
    
    public var body: some View {
        VStack {
            Text("Hello World")
                .font(.largeTitle)
            Button("Start") {
                Task {
                    await openImmersiveSpace(id: "AppSpace")
                }
            }
        }
    }
}

ImmersiveView.swift

import SwiftUI
import RealityKit

struct ImmersiveView: View {
    var loader: EnvironmentLoader
    
    public var body: some View {
        
        RealityView { content, attachments in
            content.add(try! await loader.getEntity())
           
            let headEntity = AnchorEntity(.head)
            content.add(headEntity)
            
            if let text = attachments.entity(for: "at01") {
                text.position = [0, 0, -0.25]
                headEntity.addChild(text)
            }
                       
        }
        attachments: {
            Attachment(id: "at01") {
                Text("Hello World!")
                    .font(.extraLargeTitle)
                    .padding()              
            }     
        }
    }
}

App.swift

import SwiftUI

@main
private struct App: App {    
    @State var loader = EnvironmentLoader()
    
    public var body: some Scene {
        WindowGroup {
            ContentView()
    }
        
    ImmersiveSpace(id: "AppSpace") { 
        ImmersiveView(loader: loader)
                
    }
    .immersionStyle(selection: .constant(.progressive), in: .progressive)
    }
}