Recently I updated my NW 2013 latest version on development server.

I did not update my form, the version is  Nintex Forms 2013 ( 2.7.0.0 )

The workflow working fine so far, but when I try to modify my development server workflow, I found some functions missing in  "Edit task form " and also can't save my changes etc calculated value in the "edit task form".  See the screen shot below. The first figure is my development server. The highlight parts are the production screen shot which are missing on my Development server. You can see the difference. 

This makes my very frustrated, since I need to do the development. Any idea?