title: Angular reactive forms input validation not working on load
body: <p>I am bit new to reactive form validation, trying to achieve input validation on page load, i have simple input field where i need to validate on page load, not manually. Requirement is where i have edit form with bunch of input fields where i am looking for maxLength validation on each field. I tried  with updateValueAndValidity on patchValue/setValue but the error won't show up, any help is much appreciated.</p>
  
  <p>Note: I need to show the error on page load</p>
  
  <p><a href="https://stackblitz.com/edit/angular-wpdrjs" rel="nofollow noreferrer">Stackblitz</a></p>