While using the RTE to edit a page, it's impossible to add extra text to the end of a line that already ends with a link.
I created that test page. Initially, it only contained a single link. When I went back in to edit the page and tried to add some words after the link, it incorrectly added the extra words to the link's alias. It's easy to fix this using the wiki markup, but it's still broken when trying to do it in the RTE.