無効なクラス参照を含む war アプリケーションをデプロイしようとすると ClassNotFoundException が発生する

Issue

example.war を含む abc.ear デプロイメントがあります。
example.war には、Struts taglib 記述子の .tld ファイルがあります。このアプリケーションをデプロイしようとすると、以下のような java.lang.ClassNotFoundException が発生します。

12:39:12,013 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-1) MSC000001:Failed to start service jboss.deployment.subunit."abc.ear"."example.war".POST_MODULE: org.jboss.msc.service.StartException in service jboss.deployment.subunit."abc.ear"."example.war".POST_MODULE:JBAS018733:Failed to process phase POST_MODULE of subdeployment "example.war" of deployment "abc.ear"
    at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:166) [jboss-as-server-7.4.0.Final-redhat-19.jar:7.4.0.Final-redhat-19]
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1980) [jboss-msc-1.1.5.Final-redhat-1.jar:1.1.5.Final-redhat-1]
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1913) [jboss-msc-1.1.5.Final-redhat-1.jar:1.1.5.Final-redhat-1]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_65]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_65]
    at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_65]
Caused by: org.jboss.as.server.deployment.DeploymentUnitProcessingException: java.lang.ClassNotFoundException: com.example.jsptags.WriteTag from [Module "deployment.abc.ear.example.war:main" from Service Module Loader]
    at org.jboss.as.jaxrs.deployment.JaxrsComponentDeployer.deploy(JaxrsComponentDeployer.java:79)
    at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:159) [jboss-as-server-7.4.0.Final-redhat-19.jar:7.4.0.Final-redhat-19]
    ...5 more
Caused by: java.lang.ClassNotFoundException:com.example.jsptags.WriteTag from [Module "deployment.abc.ear.example.war:main" from Service Module Loader]
    at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:213) [jboss-modules.jar:1.3.3.Final-redhat-1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:459) [jboss-modules.jar:1.3.3.Final-redhat-1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:408) [jboss-modules.jar:1.3.3.Final-redhat-1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:389) [jboss-modules.jar:1.3.3.Final-redhat-1]
    at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:134) [jboss-modules.jar:1.3.3.Final-redhat-1]
    at org.jboss.as.jaxrs.deployment.JaxrsComponentDeployer.deploy(JaxrsComponentDeployer.java:77)
    ...6 more

12:39:12,019 ERROR [org.jboss.as.server] (DeploymentScanner-threads - 2) JBAS015870:Deploy of deployment "abc.ear" was rolled back with the following failure message: 
{"JBAS014671:Failed services" => {"jboss.deployment.subunit.\"abc.ear\".\"example.war\".POST_MODULE" => "org.jboss.msc.service.StartException in service jboss.deployment.subunit.\"abc.ear\".\"example.war\".POST_MODULE:JBAS018733:Failed to process phase POST_MODULE of subdeployment \"example.war\" of deployment \"abc.ear\"
    Caused by: org.jboss.as.server.deployment.DeploymentUnitProcessingException: java.lang.ClassNotFoundException:com.example.jsptags.WriteTag from [Module \"deployment.abc.ear.example.war:main\" from Service Module Loader]
    Caused by: java.lang.ClassNotFoundException:com.example.jsptags.WriteTag from [Module \"deployment.abc.ear.example.war:main\" from Service Module Loader]"}}