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:
Resolved an issue where reports with a sprint configuration would override other saved reports when switching between them. Saved reports now maintain their configurations independently.
Fixed a problem where the "Save without date range" option was not applied correctly in reports. Reports now accurately save without including a date range when the option is selected.
Addressed an issue where reports without a date range were not reloaded properly after being viewed and saved. Reports now reload as expected in such scenarios.