Hi, Michael,
While I did mean how text appears in the editor, I didn't mean to "preview" a (```) block as monospaced, but simply about what font is used in the editor as a whole. I'm not fond of WYSIWYG editors. I'm satisfied with the pure text based editor right now. I just don't like the fact that the text in the editor is shown using a variant width font, rather than a monospaced font, as typically used in a code editor like vim/emacs. Markdown is source code anyway. It is easier to format source code using a monospaced font.
Well, it is probably a niche requirement from a programmer. So rather than making it the default, it is better to have an option to use monospaced font in the editor.
Best,
Leira