There is a lot of stuff in this page (it was my error to put them all in one page, but there are also advantages to have it like that). So when you use the Rich Text mode, which is buggy in this free Confluence version we have, it breaks some parts that you will not be aware of if you are not used to edit with this Confluence version.

So please when editing don't use the Rich Text mode but rather the Wiki Markup mode, thanks