When refactoring variables/methods this fails silent and changes are reverted. This is caused by the following error:

Caused by: java.lang.NoClassDefFoundError: org/eclipse/jdt/internal/corext/refactoring/tagging/IReferenceUpdating
at org.jboss.tools.common.model.refactoring.RenameProcessorRunner.updateReferences(RenameProcessorRunner.java:52)
at org.jboss.tools.jsf.model.handlers.bean.JSFRenameFieldParticipant.updateReferences(JSFRenameFieldParticipant.java:121)
at org.jboss.tools.jsf.model.handlers.bean.JSFRenameFieldParticipant.createChange(JSFRenameFieldParticipant.java:61)
at org.eclipse.ltk.core.refactoring.participants.ProcessorBasedRefactoring.createChange(ProcessorBasedRefactoring.java:309)
at org.eclipse.ltk.core.refactoring.CreateChangeOperation.run(CreateChangeOperation.java:125)
at org.eclipse.ltk.core.refactoring.PerformChangeOperation.run(PerformChangeOperation.java:210)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2295)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2322)
at org.eclipse.ltk.internal.ui.refactoring.WorkbenchRunnableAdapter.run(WorkbenchRunnableAdapter.java:89)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:122)