[bug]: Deleting a label removes associated work items from board

Is there an existing issue for this?

• I have searched the existing issues

Current behavior

Deleting a label makes associated work items disappear from the board. It should however just unlink the label as the confirmation prompt implies.

#8626 may be related..

Steps to reproduce

1. Sub-group work items by label, attach label X to work item Y, work item Y is correctly sub-grouped under label X swimlane. So far so good.

2. Now edit the project and delete label X, a prompt states that this label will detach from associated work items, proceed, go back to work items view, work item Y is gone; it is not sub-grouped under the "None" swimlane where I'd expected it would be.

3. I went into my recent activity view in order to find and open the disappeared work item, temporarily attached and unattached another label in order to make it reappear again on the board.

Environment

Production

Browser

Mozilla Firefox

Variant

Self-hosted

Version

v1.2.1