checkstyle rules contains warning:

<module name="WriteTag">
<property name="tag" value="@author"/>
<property name="tagFormat" value="\S"/>
</module>

Expect result:

If I do not configure the "tagSeverity" property ,its default value is "info",but the checkdtyle-plugin reports "warning"

Actually:

But when I use the Jenkins-Checkstyle ,this plugin reports "warning" as following in Jenkins log:

Successfully parsed file D:\JENKINS_hzqa_CI\workspace\daggerMaster-Checkstyle\checkstyle\checkstyle_result.xml of module with 23 warnings.

But the checkstyle-result.xml shows severity="info" not "warning"

I want to know why the severity is "info" but plugin reports me "warning".This maybe a bug of this plugin,would it?