Issue Summary

• The "Last public comment date" custom field type is enabled by the JIRA Toolkit Plugin.It is provided by Atlassian Labs through Toolkit Plugin for Jira. last public date comment field is not sorting the issues in correct order in the JQL results.
  This is reproducible on Data Center: yes

  Steps to Reproduce

1. Add the custom field Last public comment date
2. Add a comment in the Jira ticket..
3. Perform a JQL  search and  try to sort the results based on field Last public comment date

Expected Results

 Issues should  be displayed in ascending or descending order based on last comment made.

Actual Results

 Issues are not arranged in ascending or descending order based on last comment made.

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available