Jandex deletes jars on when temp directory is on different filesysytem

Issue

The following build snippet is deleting the 'jee-lib.jar' in the below on Linux and Solaris but not Windows:

  <property name="jandex.jar"
                  location="${modules.base.dir}/org/jboss/jandex/main/jandex-1.0.3.Final-redhat-2.jar" />

  <taskdef name="jandex" classname="org.jboss.jandex.JandexAntTask" classpath="${jandex.jar}" />

  ...
  <jandex run="true" verbose="true" modify="true">
    <fileset file="${jee-lib.jar}" />
  </jandex>
  ...