some Work items not opening on UWL

Hi,

Some of the workflow tasks in my UWL do not open up in a new window when i click on them. I notice that these tasks are not even hyperlinked (underlined). Instead, when i click on the line, a small pop up shows to options: Forward and Resubmit. Therefore i am not able to approve / reject these workitems.

Whereas there are some other work items which open up in a new window on click.

Is this problem related to workflow configuarion (perhaps enabling the WF for portal) or is it something to do with UWL configuration?

Appreciate your help.

thanks

zubair