I created a post with a normal title and a link to reddit for the body. I did not assign a category to it.
After submitting I realised I had forgotten the category so I edited the post and assigned a category.
On pressing submit, I received an error message saying the body was too similar to the previous post. I was not able to submit until I added some more text to the body.
This is the post: http://discourse.soylent.me/t/data-is-beautiful-keto-version/18944/1