A couple of Markdown issues

I'm using the 1P8 Windows app and trying out Secure Notes with Markdown but notice that Code and Pre-formatted Text (prefixed with 4 spaces) don't seem to work.

This is the text before I click Save...

and this is the text after I click save.

You can see that Code and the 2nd example of Pre-formatted Text, the one prefixed with 4 spaces, are the only two markdowns that don't work.

Also is the Dividing Line supposed to go accross the whole width of the notes field. In my example above it's just replicating the three dashes that I entered - it's not actually doing anything extra.

These examples were basically copied from your guide available here: https://support.1password.com/markdown/

1Password Version: 8.8
Extension Version: 2.3.7
OS Version: Windows 10
Browser:_ Firefox (but this in the app)