Sharepoint 2013 Workflow current item url issue

Hi,

We have used SharePoint 2013 designer to develop workflow for pages library.

Workflow has following steps

1)Checkout published page

2)modify one of the field

3)Checkin page.

this workflow was working well without issue however from last couple of days workflow is not working properly(probably after SharePoint September 2014 CU update) 

Workflow is failing on step 3 , we are checkin page via REST url.

Rest url : [%Workflow context:Current Site URL%]_api/web/GetFileByServerRelativeUrl('[%Workflow context:Current Item URL%]')/CheckIn(comment='Comment',checkintype=1)

However rest url responded as Bad request which is logged in workflow history list.

Rest url formed :http://serverurl/_api/web/GetFileByServerRelativeUrl('TestDocumentWorkflow/Forms/DispForm.aspx?ID=3')/CheckIn(comment='Comment',checkintype=1)

Can anyone have face this issue?

Regards,

Prafulla