Workaround as below is also not working.
set JAVA_OPTS= %JAVA_OPTS% -Xbootclasspath/p:C:\jboss-6.1.0.Final\lib\jboss-logmanager.jar -Djava.util.logging.manager=org.jboss.logmanager.LogManager -Dorg.jboss.logging.Logger .pluginClass=org.jboss.logging.logmanager.LoggerPluginImpl

No issues with JVM 6 update 14 and earlier.

Error message
INFO: 801. Dummy Java Agent:: Transformer to Transform Class: java/lang/ExceptionInInitializerError
Exception in thread "main" java.lang.ExceptionInInitializerError
at org.jboss.as.server.Main.main(Main.java:85)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.jboss.modules.Module.run(Module.java:272)
at org.jboss.modules.Main.main(Main.java:313)
Caused by: java.lang.IllegalStateException: The LogManager was not properly installed (you must set the "java.util.logging.manager" system proper
ty to "org.jboss.logmanager.LogManager")
at org.jboss.logmanager.Logger.getLogger(Logger.java:60)
at org.jboss.logmanager.log4j.BridgeRepositorySelector.<clinit>(BridgeRepositorySelector.java:42)
... 7 more