V4 Form - phone validation failing intermittently

the Forms app team has not seen these key errors for over two hours now, so we are declaring this issue fully resolved.

A fix has been deployed and internal checks are all passing.

Formstack engineers have identified this as a caching / timing issue around the phone validation library on the live form. They are changing the way this loads to eliminate this issue.

Engineers are continuing to research the source of the problem.

Formstack has discovered an issue on some V4 forms where the phone number field is not completing or validating properly. When this happens, it might require the user to clear the field and re-enter the phone number. It is also possible this error will render the form inoperable.

This error is intermittent and appears to happen about half the time