WebSocket close is being called if AjaxDownloader is used

Hello, Recently we found weird behavior of AjaxDownloader (similar to this [1] one) For some reason at the moment download is initiated WebSocketBehavior::onClose is being called What is the reason for this?

Web Socket Exceptions.

Hi all. wicket 7.3 tomcat 8.5.5 I'm starting to see many more exceptions in relation to web sockets. [1] I have a HttpSessionListener, which sends a message to an actor when a session is destroyed (aka user logout). The actor eventually broadcasts a web socket message. Am I doing something