StatusBug.swift

import Cocoa
import SwiftUI

@main
struct StatusBugApp: App {
    
    @StateObject var coordinator = StatusCoordinator()
    
    var body: some Scene {
        WindowGroup {
            EmptyView()
        }
    }
}

// Make sure you have two desktops (screen or spaces) with different tinting status bars

class StatusItem<Content: View>: NSHostingView<Content> {

    override func layout() {
        super.layout()
        print("Layout view")
    }
    
    override func layoutSubtreeIfNeeded() {
        super.layoutSubtreeIfNeeded()
        print("Layout subtree")
    }
    
    override func viewWillDraw() {
        super.viewWillDraw()
        print("View will draw")
    }

}

class StatusCoordinator: ObservableObject {
    
    let statusItem: NSStatusItem
    
    init() {
        let statusView = StatusItem(rootView: Text("Hello, world!").fixedSize())
        statusView.translatesAutoresizingMaskIntoConstraints = false
        statusItem = NSStatusBar.system.statusItem(withLength: NSStatusItem.variableLength)
        statusItem.button?.addSubview(statusView)
        NSLayoutConstraint.activate([
            statusView.leadingAnchor.constraint(equalTo: statusItem.button!.leadingAnchor),
            statusView.trailingAnchor.constraint(equalTo: statusItem.button!.trailingAnchor),
            statusView.heightAnchor.constraint(equalToConstant: 20),
            statusView.centerYAnchor.constraint(equalTo: statusItem.button!.centerYAnchor)
        ])
    }
    
}