Adding the jira.issue.editable property causes approvals to fail on Jira Service Desk

Issue Summary

Upgrading Jira Service Desk to the 4.4.0 version or higher (Jira Core/Software to 8.4.0 or higher) will break approvals with the jira.issue.editable = false. If you create a Service Request with approvals through the customer portal on JSD Server 4.X or higher, the approval button will fail if you have the jira.issue.editable = false property set on that particular workflow status

Steps to Reproduce

1. Insert the property into a workflow status.
2. Create a Service Request with approvals.
3. Attempt to move the issue through the workflow by pressing the Approve button.

Expected Results

• Up until Jira Service Desk 4.4.0, the approver was able to transition the issue without any problems.

Actual Results

• After Jira Service Desk 4.4.0, the Approve button is displayed but clicking on it, does not trigger any transitions or actions.

Workaround

The permission workflow properties jira.permission.* = denied are not affected by this bug, and can therefore be used to prevent an issue from being edited while allowing approvals. For example:

jira.permission.assign.denied = denied
jira.permission.edit.denied = denied
jira.permission.attachfiles.denied = denied
jira.permission.comment.denied = denied