clamonni on "[Plugin: Jetpack by WordPress.com] Contact form + SEO by YOAST didn't show up confirmation message"

Hello, I've activated jetpack contact form and SEO by YOAST. They work well together except for confirmation message given by contact form once you submit it. Are there a trick like strings to add in the the function.php file of the theme or other solution to fix the problem?
Thank you in advance.

https://wordpress.org/plugins/jetpack/