mailto-links set through the "Link" dialog are saved properly at first. Then they are lost when saving changes to the same paragraph later. Or rather, it changes the link to point to the current html document (which means that it just reloads the page when you klick on it). If there is a paragraph with several e-mail addresses and the need arises to change something in this paragraph (even if it is in the title, for example), this becomes a major bug, as it is not possible to ask the user to re-enter all the mailto-links.