A temp solution – and I really mean it’s a TEMPORARY solution – until we get an update from the plugin author is to add the following line of code to the js of Contact Form 7 (line 402):
/wp-content/plugins/contact-form-7/includes/js/scripts.js
FROM THIS:
return this.each(function() {
TO THIS
var recaptchaWidgets;
return this.each(function() {