Test with Googlebot/2.1

Hello!
Tried to add the vsf-google-recaptcha to VSF projects and check it with Googlebot/2.1. But the challange is not shown on submit, it is always submit data.

Expected: in Chrome set device to Googlebot/2.1, fill the form, click on submit, the captcha challange appears.
Actual: it always sends data

Did you check this behaviour? 