Disagree that it’s good UX. Now the user only gets feedback when they lose focus on the field, forcing them to go back and refocus it. In conventional React they get feedback on each keystroke allowing errors to be fixed while the field is still focused.
So when the person is starting to enter an email address, the page goes red until he enters the .com at the end? He gets an error for the first 9 digits of a phone number? Do you implement debouncing?
