How to preview webflow draft blogs in Designer mode

I am accessing one of our client website in Webflow platform using the Designer mode . How to preview the draft blogs in Designer mode. A toggle preview icon is found at top of designer page which disappears when corresponding blogpost is selected.

Out of curiosity if you’re doing this in the designer, what is it that you’re trying to see in preview mode that the designer view does not already show you? Are you doing some kind of variable interactions per blog article?