facelet-taglib method-signature not allowed

Hello,

I'm using IDEA 2016.3. I have a facelet-taglib and I want to define a listener there, so I need the tag "method-signature". But the IDE is telling me, that the element is not allowed there. If I remember right, it was working with 2016.2.

The xml-File looks like this:

<?xml version="1.0" encoding="UTF-8"?>
<facelet-taglib
  xmlns="http://java.sun.com/xml/ns/javaee"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facelettaglibrary_2_0.xsd"
  version="2.0">
  <namespace>http://hzjade.de/jsf/facelets</namespace>
  <tag>
    <description>Row for the panelgrids for the editing</description>
    <tag-name>issPgRow</tag-name>
    <source>tags/de/itsc/issPgRow.xhtml</source>
    <attribute>
      <name>type</name>
      <type>java.lang.String</type>
      <required>true</required>
      <description>Type of the component</description>
    </attribute>
    <attribute>
      <name>label</name>
      <type>java.lang.String</type>
      <required>true</required>
      <description>Label for the component</description>
    </attribute>
    <attribute>
      <name>rendered</name>
      <type>java.lang.Boolean</type>
      <description>is the component to render</description>
      <required>true</required>
    </attribute>
    <attribute>
      <name>values</name>
      <type>java.util.List</type>
      <description>The values for the list</description>
    </attribute>
    <attribute>
      <name>value</name>
      <type>java.lang.Object</type>
      <required>true</required>
      <description>The value for the selected entry</description>
    </attribute>
    <attribute>
      <name>converter</name>
      <type>javax.faces.convert.Converter</type>
      <description>The converter for the values</description>
    </attribute>
    <attribute>
      <name>nullLabel</name>
      <type>java.lang.String</type>
      <description>Label for the null_value in the component</description>
    </attribute>
    <attribute>
      <name>componentId</name>
      <type>java.lang.String</type>
      <required>true</required>
      <description>Id for the component</description>
    </attribute>
    <attribute>
      <name>validatorId</name>
      <type>java.lang.String</type>
      <description>Validator for the component</description>
    </attribute>
    <attribute>
      <name>valueChangeListener</name>
      <method-signature>void listener(javax.faces.event.ValueChangeEvent)</method-signature>
      <description>listener for the ValueChangeEvent</description>
    </attribute>
    <attribute>
      <name>valueChangeListenerUpdate</name>
      <type>java.lang.String</type>
      <description>the components to be updated</description>
    </attribute>
  </tag>
</facelet-taglib>

Maybe I'm doing something wrong.