Since latest update I get a SEVERE entry in server.log for every web-module getting undeployed. Those Web-modules contain webservices and are war files inside and ear.
15.02. 21:31:48,151 INFO org.wildfly.extension.undertow#unregisterDeployment WFLYUT0022: Unregistered web context: /mbi-ws/maj2e-langfr-dev/production
15.02. 21:31:48,151 INFO org.wildfly.extension.undertow#unregisterDeployment WFLYUT0022: Unregistered web context: /mbi/maj2e-langfr-dev/web
15.02. 21:31:48,155 SEVERE javax.enterprise.resource.webcontainer.jsf.config#contextDestroyed Unexpected state during contextDestroyed: no ConfigManager instance in current ServletContext but one is expected to exist.
15.02. 21:31:48,201 INFO org.wildfly.extension.undertow#unregisterDeployment WFLYUT0022: Unregistered web context: /mbi-ws/maj2e-langfr-dev/planning
15.02. 21:31:48,204 SEVERE javax.enterprise.resource.webcontainer.jsf.config#contextDestroyed Unexpected state during contextDestroyed: no ConfigManager instance in current ServletContext but one is expected to exist.
15.02. 21:31:48,239 SEVERE javax.enterprise.resource.webcontainer.jsf.config#contextDestroyed Unexpected state during contextDestroyed: no ConfigManager instance in current ServletContext but one is expected to exist.
15.02. 21:31:48,217 INFO org.wildfly.extension.undertow#unregisterDeployment WFLYUT0022: Unregistered web context: /mbi-ws/maj2e-langfr-dev/core
15.02. 21:31:48,359 INFO org.wildfly.extension.undertow#unregisterDeployment WFLYUT0022: Unregistered web context: /mbi-ws/maj2e-langfr-dev/sales
15.02. 21:31:48,372 INFO org.wildfly.extension.undertow#unregisterDeployment WFLYUT0022: Unregistered web context: /mbi-ws/maj2e-langfr-dev/costing
15.02. 21:31:48,379 INFO org.wildfly.extension.undertow#unregisterDeployment WFLYUT0022: Unregistered web context: /mbi-ws/maj2e-langfr-dev/purchase
15.02. 21:31:48,381 SEVERE javax.enterprise.resource.webcontainer.jsf.config#contextDestroyed Unexpected state during contextDestroyed: no ConfigManager instance in current ServletContext but one is expected to exist.
15.02. 21:31:48,383 INFO org.wildfly.extension.undertow#unregisterDeployment WFLYUT0022: Unregistered web context: /mbi-ws/maj2e-langfr-dev/external
15.02. 21:31:48,396 SEVERE javax.enterprise.resource.webcontainer.jsf.config#contextDestroyed Unexpected state during contextDestroyed: no ConfigManager instance in current ServletContext but one is expected to exist.
15.02. 21:31:48,397 SEVERE javax.enterprise.resource.webcontainer.jsf.config#contextDestroyed Unexpected state during contextDestroyed: no ConfigManager instance in current ServletContext but one is expected to exist.
15.02. 21:31:48,399 SEVERE javax.enterprise.resource.webcontainer.jsf.config#contextDestroyed Unexpected state during contextDestroyed: no ConfigManager instance in current ServletContext but one is expected to exist.
15.02. 21:31:48,402 INFO org.wildfly.extension.undertow#unregisterDeployment WFLYUT0022: Unregistered web context: /mbi-ws/maj2e-langfr-dev/inventory
15.02. 21:31:48,444 SEVERE javax.enterprise.resource.webcontainer.jsf.config#contextDestroyed Unexpected state during contextDestroyed: no ConfigManager instance in current ServletContext but one is expected to exist.
15.02. 21:31:48,404 INFO org.wildfly.extension.undertow#unregisterDeployment WFLYUT0022: Unregistered web context: /mbi-ws/maj2e-langfr-dev/common
15.02. 21:31:48,407 INFO org.wildfly.extension.undertow#unregisterDeployment WFLYUT0022: Unregistered web context: /mbi-ws/maj2e-langfr-dev/distribution
15.02. 21:31:48,408 SEVERE javax.enterprise.resource.webcontainer.jsf.config#contextDestroyed Unexpected state during contextDestroyed: no ConfigManager instance in current ServletContext but one is expected to exist.
15.02. 21:31:48,480 SEVERE javax.enterprise.resource.webcontainer.jsf.config#contextDestroyed Unexpected state during contextDestroyed: no ConfigManager instance in current ServletContext but one is expected to exist.
15.02. 21:31:48,481 SEVERE javax.enterprise.resource.webcontainer.jsf.config#contextDestroyed Unexpected state during contextDestroyed: no ConfigManager instance in current ServletContext but one is expected to exist.

Undeploy of my war file does not generate this SEVERE error.
15.02. 21:43:24,243 INFO org.wildfly.extension.undertow#unregisterDeployment WFLYUT0022: Unregistered web context: /web-maj2e-langfr-dev

When I go back to the previous Mojarra 2.2.9-jbossorg-2 the error message disappears.

There are also a lot of theses SEVERE error messages in the testsuite output files (*.txt).