It does. > When to tell the user about validation errors > Do not validate when the user moves away from a field. Wait until they try to move to the next part

It does. > When to tell the user about validation errors > Do not validate when the user moves away from a field. Wait until they try to move to the next part of the service - usually by clicking the ‘continue’ or ‘submit’ button at the bottom of the page. Yeah the character count is a bit of a special case because reaching the limit without going over would be very inconvenient.