Syntax highlighting not working in jetpack comments

Hello,
first thanks for the plugin. It’s great. Last days i discovered the markdown support in comments. But the code is rendered as normal text on the site. In the Backend comment section the code is rendered with code highlight.
Here is the site. Scroll down to the comments. https://www.benjaminroesner.com/blog/ftui-anpassen-1-grundgeruest-widgets

https://www.ads-software.com/plugins/syntaxhighlighter/