Deleting a priority does not update the card's priority icon

Issue Summary

Priority icons on a card do not update when a priority is deleted.

Steps to Reproduce

1. Create a company-managed project with a Kanban template
2. Create a 3 issues, edit one issue to have the highest priority, one to have a medium priority and one to have the lowest priority.
3. Navigate to 'Settings' > 'Issues' > 'Priorities'
4. Delete the highest priority (accept the defaults)
5. Delete the lowest priority (accept the defaults)
6. View the board.

Expected Results

The issue cards should now reflect the available priorities.

• The issue that had the 'highest' priority should should now show the icon for 'high' priority.
• The issue that had the 'lowest' priority should now show the icon for 'high' priority.
• The issue with medium priority should show the icon for 'medium' priority.

Actual Results

The issue cards show the icons for their original priorities. i.e.

• The issue that had the 'highest' priority still shows the icon for 'highest' priority, (even though this priority no longer exists).
• The issue that had the 'lowest' priority still shows the icon for 'lowest' priority (even though this priority no longer exists).

Workaround

Editing any issue (adding a comment etc) updates the whole board to use the correct priority icons in the card view.

Notes:

The issue details do show the correct priority, only the card UI is not updating after deleting a priority (see attached video).

Cards on Scrum Boards are also affected. The backlog shows the correct icons for the active sprint any backlog.