Hi Pankaj,
It appears the issue you are facing is same at http://scn.sap.com/thread/3377519
I suspect this could be due to errors in WDA redering.
There are notes like 1662900 - for rendering WDA.
Please search for any such missing SAP notes
( https://websmp208.sap-ag.de/support)
Hope this helps.
Regards,
Sahir.