AcceptHeaderByFileSuffixFilter has public fields which is not allowed by CDI

We are building RESTFul applications using RESTEasy framework. All our applications deploy fine in Wildfly Beta 8.0.0.Beta. When we are trying to deploy the exact same applications in 8.0.0.CR1 we are getting the following exception:

16:27:44,276 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-4) MSC000001: Failed to start service jboss.deployment.unit."TestControllerWebApp.war".WeldStartService: org.jboss.msc.service.StartException in service jboss.deployment.unit."TestControllerWebApp.war".WeldStartService: Failed to start service
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1904) [jboss-msc-1.2.0.CR1.jar:1.2.0.CR1]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_25]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_25]
at java.lang.Thread.run(Thread.java:724) [rt.jar:1.7.0_25]
Caused by: org.jboss.weld.exceptions.DefinitionException: WELD-000075: Normal scoped managed bean implementation class has a public field: [EnhancedAnnotatedFieldImpl] public org.jboss.resteasy.core.AcceptHeaderByFileSuffixFilter.languageMappings
at org.jboss.weld.bean.ManagedBean.checkBeanImplementation(ManagedBean.java:218)
at org.jboss.weld.bean.AbstractClassBean.internalInitialize(AbstractClassBean.java:74)
at org.jboss.weld.bean.ManagedBean.internalInitialize(ManagedBean.java:96)
at org.jboss.weld.bean.RIBean.initialize(RIBean.java:65)
at org.jboss.weld.bootstrap.ConcurrentBeanDeployer$5.doWork(ConcurrentBeanDeployer.java:114)
at org.jboss.weld.bootstrap.ConcurrentBeanDeployer$5.doWork(ConcurrentBeanDeployer.java:112)
at org.jboss.weld.executor.IterativeWorkerTaskFactory$1.call(IterativeWorkerTaskFactory.java:60)
at org.jboss.weld.executor.IterativeWorkerTaskFactory$1.call(IterativeWorkerTaskFactory.java:53)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) [rt.jar:1.7.0_25]
at java.util.concurrent.FutureTask.run(FutureTask.java:166) [rt.jar:1.7.0_25]
... 3 more

We are not able to identify the cause for this. Please help.