java.lang.NullPointerException is occured when remame Seam Component after renaming seam-ejb project

EXECUTE: Create seam Ear web project
EXECUTE: seam-ejb project -> Refacor -> Rename -> input new name
EXECUTE: Open Authenticator.java
EXECUTE: Select from context menu Seam-> Rename Seam Component and press Finish button
FAILURE: java.lang.NullPointerException
at org.jboss.tools.common.el.core.resolver.TypeInfoCollector.createMemberInfo(TypeInfoCollector.java:1218)
at org.jboss.tools.common.el.core.resolver.TypeInfoCollector.createMemberInfo(TypeInfoCollector.java:1225)
at org.jboss.tools.seam.internal.core.el.SeamExpressionResolver.getMemberInfoByVariable(SeamExpressionResolver.java:287)
at org.jboss.tools.seam.internal.core.el.SeamELCompletionEngine.resolveELOperand(SeamELCompletionEngine.java:468)
at org.jboss.tools.seam.internal.core.el.SeamELCompletionEngine.resolveELOperand(SeamELCompletionEngine.java:242)
at org.jboss.tools.seam.internal.core.validation.SeamELValidator.validateElOperand(SeamELValidator.java:375)
at org.jboss.tools.seam.internal.core.validation.SeamELValidator.validateEl(SeamELValidator.java:361)
at org.jboss.tools.seam.internal.core.validation.SeamELValidator.validateString(SeamELValidator.java:352)
at org.jboss.tools.seam.internal.core.validation.SeamELValidator.validateNodeContent(SeamELValidator.java:319)
at org.jboss.tools.seam.internal.core.validation.SeamELValidator.validateChildNodes(SeamELValidator.java:300)
at org.jboss.tools.seam.internal.core.validation.SeamELValidator.validateChildNodes(SeamELValidator.java:304)
at org.jboss.tools.seam.internal.core.validation.SeamELValidator.validateDom(SeamELValidator.java:273)
at org.jboss.tools.seam.internal.core.validation.SeamELValidator.validateFile(SeamELValidator.java:232)
at org.jboss.tools.seam.internal.core.validation.SeamELValidator.validate(SeamELValidator.java:144)
at org.jboss.tools.seam.internal.core.validation.SeamValidatorManager.validate(SeamValidatorManager.java:78)
at org.jboss.tools.seam.internal.core.validation.SeamValidatorManager.validateInJob(SeamValidatorManager.java:63)
at org.eclipse.wst.validation.internal.operations.ValidatorJob.run(ValidatorJob.java:78)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)