Reassign the document at higher level comes back to immediate supervisor

We have Employee>Supervisor hierarchy set up.

Action Type= Approval Required

Route using= Job Level

Approval Chain of= Requester

Include= All Approvers.

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Emp#1 submits a Purchase Requisition (PR). It goes to Emp#2

Emp#2 has supervisor Emp#3, but Emp#3 do not have the approval authority. So Emp#2 REASSIGNS it to Emp#4 (who has approval authority). Workflow shows it is approved by Emp#4, but again it is assigned to Emp#3. The PR showing 'Pending Approval'.

Question: Is this expected behaviour that it will come back to Emp#3 (as it was skipped)? Or is it that Reassignment is not working properly?

Regards,