Tabview not rendering correctly for a Menubar app

I'm building a Mac OSX Menubar app (build target is 14.0) and need a Settings window as part of it. I define the window as a standalone view in my @main block as follows:

struct xyzApp: App {
   MenuBarExtra {
          MenubarView()
        } label: {
          Label("XYZ", image: "xyz")
        }
        .menuBarExtraStyle(.window)
     
        Window("Settings", id: "settings-window") {
            SettingsView()
        }.windowResizability(.contentSize)
}

The Settings view looks like this

    var body: some View {
        TabView {
            Form {
                
            }.tabItem { Label("Tab1",systemImage: "gear") }
            Form {
                
            }.tabItem { Label("Tab2",systemImage: "gear") }
        }
        
    }
}

However the Tabview is not being rendered correctly, there's no image and the sizing is wrong

I tested the same code on a regular app with a Settings() declaration in the @main block and it works fine. Any points on what I'm doing wrong would be very helpful.

Thanks!