Description of problem:

The Script field titled "Expression Editor" doesn't have scroll bars. It only makes 30 lines visible and the cursor cannot move past this line. 

If I stretch the window vertically, it still doesn't show the hidden lines. It just displays a grey area. 

Version-Release number of selected component (if applicable):
BPM Suite 6.2.x (including Update 2)

How reproducible:
Always

Steps to Reproduce:
1. create a script task
2. use more than 30 lines

Actual results:
unable to scroll down to see the other lines

Expected results:
scroll bar or re-size the window should show the other lines

Additional info:
there is not workaround so far