"Contact Administrators" email contains un-interpolated variables

<div id="email-body">
<table id="email-wrap" align="center" border="0" cellpadding="0" cellspacing="0" style="background-color:#f0f0f0;color:#000000;width:100%;">
    <tr valign="top">
        <td id="email-page" style="padding:16px !important;">
            <table align="center" border="0" cellpadding="0" cellspacing="0" style="background-color:#ffffff;border:1px solid #bbbbbb;color:#000000;width:100%;">
                <tr valign="top">
                    <td bgcolor="${topBackgroundColour}" style="background-color:${topBackgroundColour};color:${topTxtColour};font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:12px;line-height:1;"><img src="$textutils.htmlEncode($jiraLogoUrl)" alt="" style="vertical-align:top;" /></td>
                </tr>
<br/>
<table cellpadding="1" cellspacing="0" border="0" bgcolor="#bbbbbb" width="100%" align="center"><tr><td>
<table cellpadding="4" cellspacing="0" border="0" width="100%" bgcolor="#ffffff">

<tr bgcolor="#ffffff"><td>
    Sorry, please ignore this.
</td></tr>

</table>
</td></tr></table>











            </table>
        </td><!-- End #email-page -->
    </tr>
    <tr valign="top">
        <td style="color:#505050;font-family:Arial,FreeSans,Helvetica,sans-serif;font-size:10px;line-height:14px;padding: 0 16px 16px 16px;text-align:center;">
            This message is automatically generated by JIRA.<br />
            If you think it was sent incorrectly, please contact your <a style='color:${textLinkColour};' href='/secure/ContactAdministrators!default.jspa'>JIRA administrators</a>.<br />
            For more information on JIRA, see: <a style='color:${textLinkColour};' href='http://www.atlassian.com/software/jira'>http://www.atlassian.com/software/jira</a>
        </td>
    </tr>
</table><!-- End #email-wrap -->
</div><!-- End #email-body -->