We're seeing a few reports in Blogger Help Forum: Something Is Broken , from blog owners attempting to compose a new post, and seeing Required field must not be blank The problem appears to result from trying to compose a post, without first entering a Post title. It appears that Blogger, trying to stabilise the post editor, is requiring non blank post titles, to save posts being composed. This includes the post being under effects of AutoSave , and the creation of Draft posts.
What Blogger won't tell you