1. Open a new writer document
2. Turn off both widow and orphan control, and enable display of nonprinting characters (this is so you can see how the characters act. Otherwise, you just see the line breaks malfunction)
3. Press enter until you are on the last line of the page
4. Press shift+enter to make a line break, not a paragraph break
5. Press enter, without pressing shift.
6. Press backspace.

Now you have 1 page of text. The second page has been removed, and there is a paragraph symbol superimposed over a line break symbol.
Typing text at this point will move onto the next page, and the two symbols are no longer overlapping. 
Alternatively, while the symbols overlap, if you press enter repeatedly, the symbols don't expand to their correct place on the page.