Affects: Release Notes
Help Desk Ticket Reference: https://na7.salesforce.com/500A0000007ou02
project_key: JBEPP

It looks a same issue which was reported in JBPORTAL-2012.

The following patch suggested in the above JIRA seems to fix the issue. At least it resolved the issue in my local test. However, I am not sure if this is a good way to fix the issue or if it breaks anything else. Could you review the patch?

{noformat} 
Index: core/src/bin/portal-core-war/layouts/common/modal_body.jsp
===================================================================
--- core/src/bin/portal-core-war/layouts/common/modal_body.jsp	(revision 14000)
+++ core/src/bin/portal-core-war/layouts/common/modal_body.jsp	(working copy)
@@ -1,5 +1,5 @@
    <div id="login-modal" style="display:none">
       <div id="login-modal-msg" style="display:none;width:257px;height:157px">
-      <iframe src="" frameborder="0" width="257" height="157" scrolling="no" marginheight="0" marginwidth="0" name="login-content" class="login-content" id="loginIframe"></iframe>
+      <iframe src="javascript:" frameborder="0" width="257" height="157" scrolling="no" marginheight="0" marginwidth="0" name="login-content" class="login-content" id="loginIframe"></iframe>
       </div>
-   </div>
\ No newline at end of file
+   </div>
Index: core/src/resources/portal-core-war/WEB-INF/jsp/header/header.jsp
===================================================================
--- core/src/resources/portal-core-war/WEB-INF/jsp/header/header.jsp	(revision 14000)
+++ core/src/resources/portal-core-war/WEB-INF/jsp/header/header.jsp	(working copy)
@@ -51,7 +51,7 @@
 <script type="text/javascript">
    /* <![CDATA[ */
    //we don't need the iframe/modal if logged in
-   document.getElementById('loginIframe').src = '';
+   document.getElementById('loginIframe').src = "javascript:''";
    /* ]]> */
 </script>
 <%= rb.getString("LOGGED") %>: <%= principal.getName() %><br/><br/>
{noformat}