Description of problem:
Please, look at the attached screen shot. Red rectangles mark scroll bar in scroll bar. This is uncomfortable for an user who has a small display resolution or uses Message Panel.

Version-Release number of selected component (if applicable):
6.1.0 ER5

How reproducible:

Steps to Reproduce:
1. Open Properties Bar in jBPM Designer
2. Run simulation for a process which contains lots of tasks
3. Set the height of Message Panel to 60 % of the height of the display

Actual results:
Simulation results tab contains a scroll bar in a scroll bar

Expected results:
My opinion is that the first level scroll bar is not comfortable and it has not any functionality.

Additional info: