Conversation timeout is broken

When I'm already logged in in a JSF web app and get a CDI/Weld conversation timeout, then an error page should be shown.
However, I'm getting the stacktrace below, and a blank page instead of the error page is shown.
The error page is configured in web.xml:

  <error-page>
    <exception-type>org.jboss.weld.context.NonexistentConversationException</exception-type>
    <location>/error/conversationTimeout.xhtml?nocid=true</location>
  </error-page>

Stacktrace with the current snapshot of WildFly using Undertow 1.0.0.Beta8 in the WildFly console:
16:20:12,466 ERROR [io.undertow.request] Exception while generating error page /error/conversationTimeout.xhtml?nocid=true: java.lang.RuntimeException: java.lang.IllegalStateException: JBAS017329: No security context found
at io.undertow.servlet.spec.RequestDispatcherImpl.error(RequestDispatcherImpl.java:394) [undertow-servlet-1.0.0.Beta8.jar:1.0.0.Beta8]
at io.undertow.servlet.spec.RequestDispatcherImpl.error(RequestDispatcherImpl.java:315) [undertow-servlet-1.0.0.Beta8.jar:1.0.0.Beta8]
at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:222) [undertow-servlet-1.0.0.Beta8.jar:1.0.0.Beta8]
at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:194) [undertow-servlet-1.0.0.Beta8.jar:1.0.0.Beta8]
at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:72) [undertow-servlet-1.0.0.Beta8.jar:1.0.0.Beta8]
at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:128) [undertow-servlet-1.0.0.Beta8.jar:1.0.0.Beta8]
at io.undertow.server.HttpHandlers.executeRootHandler(HttpHandlers.java:36) [undertow-core-1.0.0.Beta8.jar:1.0.0.Beta8]
at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:623) [undertow-core-1.0.0.Beta8.jar:1.0.0.Beta8]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_25]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_25]
at java.lang.Thread.run(Thread.java:724) [rt.jar:1.7.0_25]
Caused by: java.lang.IllegalStateException: JBAS017329: No security context found
at org.wildfly.extension.undertow.security.SecurityActions$5.run(SecurityActions.java:119)
at org.wildfly.extension.undertow.security.SecurityActions$5.run(SecurityActions.java:114)
at java.security.AccessController.doPrivileged(Native Method) [rt.jar:1.7.0_25]
at org.wildfly.extension.undertow.security.SecurityActions.pushRunAsIdentity(SecurityActions.java:114)
at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:88)
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.0.Beta8.jar:1.0.0.Beta8]
at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.0.Beta8.jar:1.0.0.Beta8]
at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:196) [undertow-servlet-1.0.0.Beta8.jar:1.0.0.Beta8]
at io.undertow.servlet.handlers.ServletInitialHandler.dispatchToPath(ServletInitialHandler.java:139) [undertow-servlet-1.0.0.Beta8.jar:1.0.0.Beta8]
at io.undertow.servlet.spec.RequestDispatcherImpl.error(RequestDispatcherImpl.java:388) [undertow-servlet-1.0.0.Beta8.jar:1.0.0.Beta8]
... 10 more