(Edited with new issue)
Quickstart test ( mvn test -Puitests-clustered -DeapHome=/path/to/first/server -DeapHome2=/path/to/second/server ) fails with following error on EAP 7.0.7 (and 7.0.6):

04:33:16,641 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-1) MSC000001: Failed to start service jboss.deployment.unit."jboss-helloworld-jdg.war".WeldStartService: org.jboss.msc.service.StartException in service jboss.deployment.unit."jboss-helloworld-jdg.war".WeldStartService: Failed to start service
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1978)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.jboss.weld.exceptions.DeploymentException: tried to access class org.jboss.logging.Log4j2Logger from class org.jboss.logging.Log4j2Logger$1
at org.jboss.weld.executor.AbstractExecutorServices.checkForExceptions(AbstractExecutorServices.java:66)
at org.jboss.weld.executor.AbstractExecutorServices.invokeAllAndCheckForExceptions(AbstractExecutorServices.java:43)
at org.jboss.weld.executor.AbstractExecutorServices.invokeAllAndCheckForExceptions(AbstractExecutorServices.java:51)
at org.jboss.weld.bootstrap.ConcurrentBeanDeployer.createClassBeans(ConcurrentBeanDeployer.java:75)
at org.jboss.weld.bootstrap.BeanDeployment.createBeans(BeanDeployment.java:256)
at org.jboss.weld.bootstrap.WeldStartup.deployBeans(WeldStartup.java:396)
at org.jboss.weld.bootstrap.WeldBootstrap.deployBeans(WeldBootstrap.java:83)
at org.jboss.as.weld.WeldStartService.start(WeldStartService.java:95)
at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:2032)
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1955)
... 3 more
Caused by: java.lang.IllegalAccessError: tried to access class org.jboss.logging.Log4j2Logger from class org.jboss.logging.Log4j2Logger$1
at java.lang.Class.getEnclosingMethod0(Native Method)
at java.lang.Class.getEnclosingMethodInfo(Class.java:1072)
at java.lang.Class.getEnclosingClass(Class.java:1272)
at org.jboss.weld.util.reflection.Reflections.isTopLevelOrStaticNestedClass(Reflections.java:422)
at org.jboss.weld.util.Beans.isTypeManagedBeanOrDecoratorOrInterceptor(Beans.java:506)
at org.jboss.weld.bootstrap.BeanDeployer.createClassBean(BeanDeployer.java:213)
at org.jboss.weld.bootstrap.ConcurrentBeanDeployer$2.doWork(ConcurrentBeanDeployer.java:78)
at org.jboss.weld.bootstrap.ConcurrentBeanDeployer$2.doWork(ConcurrentBeanDeployer.java:75)
at org.jboss.weld.executor.IterativeWorkerTaskFactory$1.call(IterativeWorkerTaskFactory.java:63)
at org.jboss.weld.executor.IterativeWorkerTaskFactory$1.call(IterativeWorkerTaskFactory.java:56)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:748)
at org.jboss.threads.JBossThread.run(JBossThread.java:320)