YouTube in Post breaks boundary

Hi,

Amazing theme, thank you all for the time and effort

When posting a YouTube link, directly without shortcode, into a Post it renders incorrectly on the website. Specifically it shows ‘full size’ and doesn’t respect the themes areas bleeding into and over the widgets.

Additionally the shortcode [youtube ytube-link] does not parse correctly.

I am on the latest version of both WP and the theme. I do use Jetpack but this seems to happen regardless of that being active or not.

Thank you in advance.
D