BPM Worklist, In Deadlines the Expiration Settings is configured but the workflow doesn't escalate

Hello,

Configuring "Deadlines" for "Transfer Approval Workflow" and the approvers are Management Hierarchy.

It has been made 15 minutes for test purpose, however when we do the transfer it holds in the 1st approver stage even after the 15 minutes

Tried to set the due date with the same escalation duration and resulted in the same behavior.