I just bought RMarkdown from the App Store. I'm on macOS Big Sur 11.0.1.
I think RMarkdown is version 2.0 but there's no About so I'm just going by the Version History in the App Store.
I'm having problems with the toolbar. It doesn't really appear unless Icon and Text is the setting.
And could you add more to the toolbar, basically everything in the Format menu.
Thanks for your consideration.