Steps to reproduce:
- Enable and configure reCaptcha from Configuration -> System Settings -> CAPTCHA (You can get keys at https://www.google.com/recaptcha and configure it to be used by localhost domain.)
- In Site Admin/Content, add a Form with some random fields (one is enough) and enable reCaptcha for this Form. (Edit/ three points/Settings/Require captcha).
- Save, publish and get URL for the form.
- Paste URL in another tab
- See form
ReCaptcha would be rendered and user would be able to press in the checkbox and submit the form.
ReCaptcha sometimes is not rendered, when it is, submit button does not get available after captcha is filled.