Hi @yukikatayama,
Any update regarding this topic?
Thanks
I confirm that I saw it in Safari and iOs. The change I shared above did the trick in /wp-content/plugins/contact-form-7/includes/js/scripts.js
@takayukister it comes from if ( typeof window.FormData !== 'function' ) { test which doesn’t work with Safari. if ( typeof window.FormData === undefined ) { seems to work better.
Indeed that’s a major drawback for ajax powered site!
I think that rolling back to 4.7 version is the safest solution until an init function is added again.