Google Analytics snippet breaks Ajax functionality

Hi!

I’ve noticed that on my WordPress installation when I add this snippet

on_sent_ok: "_gaq.push(['_trackEvent', 'Contact Form', 'Submit']);"

in the ‘Additional Settings’ field Ajax notifications about successful or failed message sending stop appearing.

On the web you can find a ‘solution’, change line 10 of wp-content/plugins/contact-form-7/includes/js/scipts.js from:

$('div.wpcf7 > form').wpcf7InitForm();

to

$('div.wpcf7-form > form').wpcf7InitForm();

but this is a bad solution since it breaks Ajax functionality completely and the whole page reloads.

Any suggestions how to fix this?

https://ww.wp.xz.cn/plugins/contact-form-7/