Progress Bar into Combo Box is not working properly

[Peter Penzov]

Hi All,
   I want to implement Progress Bar into Combo Box. I pasted the code here:

http://stackoverflow.com/questions/20518329/combobox-with-progress-bars-is-not-working-properly


When I run the code the progress bar is empty. There is no selected
Progress Bar which is displayed by default. And also after a time the
progress bar is not responsible. I tested the code with Java 8b119. Maybe
this is a bug.

Can you please assist me to fix this issue?

Regards,
Peter