When comparing the EAP installed from errata together with CXF against the zip with CXF, I see many differences in jsr181-api.jar.

[dist-diff] server/standard/deployers/jbossws.deployer/jsr181-api.jar!javax/jws/soap/SOAPBinding.class
[dist-diff] server/standard/deployers/jbossws.deployer/jsr181-api.jar!javax/jws/Oneway.class
[dist-diff] server/standard/deployers/jbossws.deployer/jsr181-api.jar!javax/jws/soap/InitParam.class
[dist-diff] server/standard/deployers/jbossws.deployer/jsr181-api.jar!javax/jws/WebParam.class
[dist-diff] server/standard/deployers/jbossws.deployer/jsr181-api.jar!javax/jws/WebService.class
[dist-diff] server/standard/deployers/jbossws.deployer/jsr181-api.jar!javax/jws/soap/SOAPBinding$Use.class
[dist-diff] server/standard/deployers/jbossws.deployer/jsr181-api.jar!javax/jws/WebMethod.class
[dist-diff] server/standard/deployers/jbossws.deployer/jsr181-api.jar!javax/jws/soap/SOAPBinding$Style.class
[dist-diff] server/standard/deployers/jbossws.deployer/jsr181-api.jar!javax/jws/soap/SOAPMessageHandlers.class
[dist-diff] server/standard/deployers/jbossws.deployer/jsr181-api.jar!javax/jws/WebParam$Mode.class
[dist-diff] server/standard/deployers/jbossws.deployer/jsr181-api.jar!javax/jws/WebResult.class
[dist-diff] server/standard/deployers/jbossws.deployer/jsr181-api.jar!javax/jws/soap/SOAPMessageHandler.class
[dist-diff] server/standard/deployers/jbossws.deployer/jsr181-api.jar!javax/jws/soap/SOAPBinding$ParameterStyle.class
[dist-diff] server/standard/deployers/jbossws.deployer/jsr181-api.jar!javax/jws/HandlerChain.class

Similarly in other server configs.

This may be caused by the fact that the jar was built with different jdk versions:

Manifest-Version: 1.0
Ant-Version: Apache Ant 1.6.5
Created-By: 1.5.0_06-b05 (Sun Microsystems Inc.)

vs.

Manifest-Version: 1.0
Specification-Title: sun-ws-metadata-2.0-api
Created-by: 16.3-b01 Sun Microsystems Inc.
Ant-Version: Apache Ant 1.7.1
Implementation-Title: sun-ws-metadata-2.0-api
Specification-Version: 1.0.MR1
Implementation-Version: 1.0.MR1
Implementation-URL: https://jsr250.dev.java.net/