Existing tickets do not respect new Pause On conditions

Summary

After updating SLA 'Pause On' condition, existing tickets with affected statuses are not updated.

Environment

JIRA 7.3.2
JIRA Service Desk 3.3.2

Steps to Reproduce

1. Have a service desk project with issue statuses Waiting for Clarification and Waiting for Call Center.
2. Have an SLA with Waiting for Clarification status in the Pause On conditions.
3. Edit the SLA Pause On conditions: remove Waiting for Clarification and add Waiting for Call Center.

Expected Results

After SLA recalculates:

• The SLA is no longer paused for issues with the status Waiting for Clarification.
• The SLA is now paused for issues with the status Waiting for Call Center.

Actual Results

After SLA recalculates:

• The SLA remains paused for existing issues with the status Waiting for Clarification.
• The SLA is not paused for existing issues with the status Waiting for Call Center.
• New issues and issues which are updated by the user see the SLA enter the proper state.
• Only existing issues are affected.

Workaround

Since any change/update to affected issues causes the SLA to enter the correct state for those issues, a bulk change to all affected issues (for example, bulk add comment) will update the SLA state to reflect the rule change.

Notes

Locked reindex and JIRA restart have no effect on the SLA state. Screenshots attached.