jenkins loses post-build action settings after restart with plugins based on ruby runtime
<p>Tested with <a href="https://wiki.jenkins-ci.org/display/JENKINS/Yammer+Plugin" rel="nofollow">Yammer Plugin</a> and <a href="https://wiki.jenkins-ci.org/display/JENKINS/Buddycloud+Plugin" rel="nofollow">buddycloud Plugin</a> in Jenkins 2.x. 
Since Yammer and buddycloud plugins depend on jruby based <a href="https://wiki.jenkins-ci.org/display/JENKINS/Ruby+Runtime+Plugin" rel="nofollow">Ruby Runtime Plugin</a>, installing those installs Ruby Runtime first.</p>

<p>As long as I don't restart Jenkins, the plugins work, and their settings persist. But after Jenkins is restarted the Post-Build Action settings on all job's configuration pages are lost and have to be re-entered. The jobs' respective config.xml files retain correct settings, but they seem to have no effect. Is there a fix or a workaround? thanks </p>