Steps to Reproduce

Use 9.6.0-jakarta FL in Tomcat 10, and open WebSocket

<!-- zk.xml -->
<listener>
	<listener-class>org.zkoss.zkmax.au.websocket.WebSocketWebAppInit</listener-class>
</listener>

<!-- test.zul -->
<zk>
    <button onClick="Clients.log(event.toString())" label="test event"/>
</zk>

Current Result

java.lang.IllegalStateException: The response object has been recycled and is no longer associated with this facade

Expected Result

Established a WebSocket connection

Debug Information

WebSocketEndPoint.java
-> public void onMessage(String message) {
-> private void process(Session wsession, String message) throws IOException
-> old = I18Ns.setup(_session, request, response, "UTF-8");
-> final Object ol = Charsets.setup(hsess, request, response, charset);
-> response.setCharacterEncoding(charset);

Since the handshake response object has been recycled, so an exception was thrown.

Workaround