Session immediately expires after upgrade Jetty server to 9.4.6

Running Jetty 9.3.21 with Vaadin 8.3.3 was working as expected, Jetty 9.4.6 breaks.

@WebServlet(urlPatterns = “/mywebsite/*”, name = “RiaUI”, asyncSupported = true,
initParams = {
@WebInitParam(name = “org.atmosphere.websocket.suppressJSR356”, value = “true”),
@WebInitParam(name = “org.atmosphere.websocket.maxIdleTime”, value = “600000”)

UI config:


I am kinda stuck with the new Jetty due to a Karaf container dependency in Karaf 4.2.0.
It seems too be a push issue with Jetty and Atmosphere, is there a working Vaadin Atmosphere version available?

Added Karaf log
17053398.txt (20.4 KB)

Added installed libs overview

Added browser debug log
Server is pushing the expire session message.
17053469.txt (3.96 KB)

Try removing the “org.atmosphere.websocket.suppressJSR356”, value = “true”