JIRA change history shows garbage values for GH Rank field even when Rank field is unchanged, and doesn't update change history when rank does change

This is really 3 bugs
1. Our JIRA change history is littered with what looks like changes to the Rank field when no change was made. It happens for nearly every operation on an issue. this happens even when there is no change to Rank. This is confusing and just clutter. See below for an example.
2. The value displayed currently in the JIRA change log for rank is meaningless - e.g. there is no Rank 219000000
3. When I do drag and drop rank an item, there is no change to the change history in JIRA for rank but the rank value does change !

Thanks for listening and helping.

-------------------
Change by Joel Feldman - 11/Feb/08 12:36 PM
Fix Version/s Sprint 20-Red [ 10020 ]
Rank 2190000000

Change by Joel Feldman - 11/Feb/08 01:22 PM
Fix Version/s Sprint 20-Red [ 10020 ]
Rank 20000000

Change by Chris Brookins - 19/Feb/08 07:28 PM
Summary 78BL8Q ScheduleWizard: Clicking OK in Holidays form doesn't save the new business hours for the user 78BL8Q ScheduleWizard: Clicking OK in Holidays form doesn't save the new business hours for the user
Rank 645000000