Issue Summary

Swimlane mode does goes not back to the default when Group by is set to none until user cleans up browser cache.

Steps to Reproduce

1. Create a swimlane lets say based on Assignee with the option unassigned issues Show above other swimlanes
2. Then select group by assignee, unassigned issues are shown at the bottom
3. Changing the group by to none, would show no swimlanes at all.
4. Now I reload the page swimlane mode does not go back to default

Expected Results

Swimlane mode should go back to default when group by is set to none

Actual Results

Swimlane mode does not go back to default

Workaround

User should clean up browser cache.