Right click context menu on datagrid not working properly

Hi,

I am using Web Publisher 6.5 sp4.

When i check for right click context menu view then rendition/versions, it shows a page with all the rendtions and versions.

There is back button there to come back to the previous screen.

When i click that to come back to the previous screen my right click context menu stop working.

While right clicking it shows general right click option of html rather than dm_document actions.

Plese see the attachment.

Can any body give any suggestions to fix this issue if it had been some configuration issues.