Websockets are not working if URL has a hash in it

I have tried to create "single page" application with custom HomePageMapper to eliminate ?1 at the end of the URL (please see quickstart app attached)

Inconsistemcy:
I have used wicket-native-websocket 0.4 which have dependency to wicket-experimental 6.2.0
should it be 6.3.0 ?

Errors:
1) if the following URL is accessed: http://localhost:8080/#testHash
The following error appears in the Chrome console:
URL has fragment component ws://localhost:8080/#testHash&pageId=4

I believe URL constructed should be: ws://localhost:8080/?&pageId=4#testHash

2) If the following URL is accessed: http://localhost:8080/
I have Exception in the web server console:

WARN - ServletHandler - /&pageId=0
java.lang.IllegalStateException: Request parameter 'pageId' is required!
at org.apache.wicket.util.lang.Checks.notEmpty(Checks.java:55)
at org.apache.wicket.protocol.ws.api.AbstractWebSocketProcessor.<init>(AbstractWebSocketProcessor.java:77)
at org.apache.wicket.protocol.ws.jetty.JettyWebSocketProcessor.<init>(JettyWebSocketProcessor.java:70)
at org.apache.wicket.protocol.http.Jetty7WebSocketFilter.doWebSocketConnect(Jetty7WebSocketFilter.java:81)
at org.eclipse.jetty.websocket.WebSocketFactory.acceptWebSocket(WebSocketFactory.java:351)
at org.apache.wicket.protocol.http.Jetty7WebSocketFilter.acceptWebSocket(Jetty7WebSocketFilter.java:75)
at org.apache.wicket.protocol.http.AbstractUpgradeFilter.processRequest(AbstractUpgradeFilter.java:102)
at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:245)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1332)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:477)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:524)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:227)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1031)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:406)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:186)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:965)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:111)
at org.eclipse.jetty.server.Server.handle(Server.java:348)
at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:452)
at org.eclipse.jetty.server.BlockingHttpConnection.handleRequest(BlockingHttpConnection.java:47)
at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:884)
at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:938)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:630)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:230)
at org.eclipse.jetty.server.BlockingHttpConnection.handle(BlockingHttpConnection.java:66)
at org.eclipse.jetty.server.bio.SocketConnector$ConnectorEndPoint.run(SocketConnector.java:254)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:603)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:538)
at java.lang.Thread.run(Thread.java:722)

I believe this exception is caused by my custom home page mapper. May be there is workaround how this can be used? or maybe I can add javascript code to open websocket?

Thanks in advance