There is a problem with contact form 7. When I have the option Hide Captcha for logged in users? then the form is not working when send there is a message that a field is necessary to complete. And when I remove the shortcode of no captcha then it is working.
So I guess that the system keeps searching for an answer from google captcha while it shouldn’t because it is not there.
For users that are not logged in the form and captcha works fine.