I to am having the same issue. Do you currently have a file upload field on your form?
My issue did not occur until I inserted a file upload field into my form. I have read some other posts stating that disabling the JQuery for the form works, but that does not help with the great UX that comes with Contact Form 7.
I have also read that replacing the jquery.form.js file with an older version works as well. This is great but should not be the solution. Also, I have noticed the latest version of CF7 uses jquery.form.min.js, and not jquery.form.js, so it wouldn’t work anyway.
Does anyone know of a proper solution? I am going to try to minify the older jquery.form.js file and see if that fixes it. I will report back.
