The built-in client-side validation displays validation message bubbles on form submit, and also when a user changes focus away from a validable field. The former (on-form-submit triggered validation) is useful and a desirable feature from a customer perspective. The latter (on-focus-change triggered validation) is rather annoying, as validation bubbles keep popping up whenever the user clicks or tabs around the form.
Ideally, it would be desirable to have a configurable option (perhaps on the Form component) to disable the on-focus-change triggered validation popups, while still retaining the on-form-submit triggered popups.
Note: If the on-focus-change triggered popups validation were disabled, it would still be desirable to monitor the field focus change events, solely to remove existing validation markers (the red label and the x icon) if the field value now passes validation.