Timeout errors when releasing a large amount of issues from a Kanban board

Summary

Time-out errors when releasing a large amount of issues from a Kanban board

Steps to Reproduce

1. Access a board with >100 unreleased issues;
2. click Release...;
3. fill in the required fields in the dialog displayed and click Release.

Expected Results

Issues are released and new Version is created.

Actual Results

The release takes a long time due to the number of issues and a time-out error is displayed.

Notes

The error is only at the UI level, though, and the operation continues in the back end. The new Version is created and released, and all issues are updated as expected. Refreshing the board will confirm that - released issues are no longer visible.

Workaround

Refreshing the board should confirm that released issues are no longer visible.

Ensure the board is set to filter out issues that already have a released fixVersion set by configuring the Kanban board sub-filter with:

 
fixVersion in unreleasedVersions() OR fixVersion is EMPTY