SOLR-1781
https://issues.apache.org/jira/browse/SOLR-1781?page=com.atlassian.jira.plugin.system.issuetabpanels%3Aall-tabpanel

This Solr bug is still open, but there is a patch that is reported to solve the problem (at least partially). Should we prepare a patched Solr jar for end users?