Skip Current assignment option not visible for some Requisitions

Summary:

We have noticed this inconsistence behavior mostly for requisitions..
In some cases when we have multiple approves on the Requisition and few of them approves it but because of any reason requisition it gets withdrawn and resubmit the same. Business generally asks us to skip the approves for those who has already approved to reduce the duplicate work.

 In some cases we are able to skip and push the approval to required approves, but sometime after skipping 1 or 2 approve "Skip Current Assignment" option doesn't appear in action drop down menu in BPM notification screen.

 We uses the same Support User for this activity and skip it using the BPM notification screen.