I'm using version 3.4.1, and Yoast SEO 1.2.5
For ex: we have this article on WPBeginner
Anyone can simply add:
This will resolve the post with the rel="canonical" for the new page which creates duplicate content.
I tried this with @JJJ at WordCamp columbus. This only works with numbers not letters or characters. It has to do something with post pagination even though the article is not split into pages.
Started a trac ticket just to find out that the bug is with WordPress SEO by Yoast - http://core.trac.wordpress.org/ticket/21278
All in One SEO does not replicate this error.