Hi,
I am pretty sure we cannot control this because all we do is loading the recaptcha script using the current language tag in Joomla. From there Google loads all further scripts by itself.
I thought you meant that the recaptcha element itself is appearing twice in the form (we had this issue indeed in the past) but this is not related to that.
What you can try is removing the language tag for testing in the file
administrator\components\com_breezingforms\libraries\crosstec\classes\BFQuickModeBootstrap.php
There find this line (around line 1408):
JFactory::getDocument()->addScript($http.'://www.google.com/recaptcha/api.js?'.$reCaptchaLang.'&onload=onloadBFNewRecaptchaCallback&render=explicit', $type = "text/javascript", array('data-usercentrics' => 'reCAPTCHA'));
And change it to this
JFactory::getDocument()->addScript($http.'://www.google.com/recaptcha/api.js?onload=onloadBFNewRecaptchaCallback&render=explicit', $type = "text/javascript", array('data-usercentrics' => 'reCAPTCHA'));
This will instruct recaptcha to load its default language setup. Then please check how it behaves with your page analyis.
Regards,
Markus