I was exploring first() and last(). first() is working fine but not able to understand the behaviour of last(). Tried all possible way i can but not getting anything inside sink. Please let let me know what missed?

import Combine

final class FirstLastDemo {
    @Published var pubOne: Int = 0
    @Published var pubTwo: Int = 0
    
    private var cancellables = Set<AnyCancellable>()
    
    init() {
        $pubOne
            .first()
            .sink { value in
                print("Output pubOne:", value)
            }
            .store(in: &cancellables)

        $pubTwo
            .last()
            .sink { value in
                print("Output pubTwo:", value)
            }
            .store(in: &cancellables)
    }
}

let demo = FirstLastDemo()
(1..<3).forEach {
    demo.pubOne = $0  // Working as expected
}

(1..<3).forEach {
    demo.pubTwo = $0 // No update in `sink`
}