Adding a new link to a post messes up the code already present in the post
When adding / changing links in a post via the editor's "Hyperlink" button, the editor may renumber link references (e.g. if you insert a link at the top, it will have reference
, and other existing links will have their numbers increased).
The problem is this: The editor will do its renumbering magic even if the bracket-number-bracket combination is inside a codeblock. So if I have this:
This code does not work: myarr = 7; plz help people of [stackoverflow] : http://stackoverflow.com
and then use Ctrl-L to insert a link at the top, the editor will not only add the link (and mysteriously duplicate the reference entry at the bottom), but also change the unrelated code:
This code from [the internet] does not work: myarr = 7; plz help people of [stackoverflow] : http://google.com : http://stackoverflow.com : http://stackoverflow.com
This post on TeX.se is an example of where a user seems to have fought with this problem (see the revision history).