After update Gerrit Trigger from 2.39.2 to 2.39.4 some icons couldn't be found.

Previously there were icons about the state of other jobs triggered by gerrit changes. Now they are gone, there is only an empty img tag in the HTML code. It is empty when plugin tries to upload icon https://github.com/jenkinsci/gerrit-trigger-plugin/blob/master/src/main/resources/com/sonyericsson/hudson/plugins/gerrit/trigger/hudsontrigger/GerritCause/description.jelly#L57

This is what my browser showed as HTML for the broken icons:

<td windth="18">
    <img>
</td> 

Looks like after changes in JENKINS-71007, plugin doesn't use icons from plugin root, but tries use icons from Jenkins root. But it doesn't work properly