Fix IdentifierFirst authnenticator double submission
}
</script>
-<form action="<%=loginFormActionURL%>" method="post" id="identifierForm">
+<form action="<%=loginFormActionURL%>" onSubmit="event.preventDefault()" method="post" id="identifierForm">
<%
if (loginFormActionURL.equals(samlssoURL) || loginFormActionURL.equals(oauth2AuthorizeURL)) {
%>
