I never had such an issue. I did a research and found out This guide. My guess is that the problem is the
HTTPS in the YouTube URL that you added. My guess is based upon the error below that I see on your website:
www-widgetapi.js:106 Failed to execute 'postMessage' on 'DOMWindow': The target origin provided ('https://www.youtube-nocookie.com') does not match the recipient window's origin ('https://stjosephcollegeseminary.org').
The problem is most probably an error on the settings and the way you added the video and not a bug.
kindly get back to us with the result of the steps above and URL/User/Pass of your WordPress dashboard using the Secure Note functionality of the post to follow up the case if you still have problems.