Good news! Worklogs - Time Tracking and Reports team has just released a new version, and since you use Jira Server you can decide to upgrade at any time! All that is needed is a click of a button in the Apps management screen on your instance!
Bug fixes:
Improved Issue Search:
We fixed a bug related to the Issue Search feature, resolving slower initialization and search functionality.
We fixed sorting issue that caused incorrect placement of exact key search results.
...