Cut the appendices from an article (to see if they were the source of a problem), and then put them back (because they weren't)
Steps to Reproduce:
- Select several sections from the end of an article, all the way to the end of the page.
- Command-x to cut.
- Command-v to paste.
The section headings were duplicated, but the content was not. The result is two sets of section headings, the first of which is empty.