ReactiveKitIssue.swift

import ReactiveKit
import UIKit

class ViewController: UIViewController {
    // ... snip ...
    
    override func viewDidLoad() {
        super.viewDidLoad()
        viewModel.email.map { email in
            return email?.address
        }.bind(to: emailTextField.reactive.text).dispose(in: reactive.bag)
    }
}

class EmailTextField: UITextField {
    // ...snip...
    override func awakeFromNib() {
        super.awakeFromNib()
        
        reactive.text.observeNext { s in
            // ISSUE: only get the initial update, no subsequent values come through
        }.dispose(in: reactive.bag)
    }
}