The DTD needs to be of version 1.0.2 instead of 1.0, as the short-circuit is introduced in the 1.0.2 version

<!DOCTYPE validators PUBLIC 
  		"-//OpenSymphony Group//XWork Validator 1.0.2//EN" 
  		"http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd">