Job progress not correct for parallel tasks

[ppcololo]

I have one Job with 50x parallel tasks inside.
When some task finished inside this Job - Job doesn't show correct counter of % Completed - it still 0%.
Is it possible to show correct percentage of finished tasks, like:
job_tasks_count = 50
job_tasks_completed = 3
% Completed = 3/50*100=6%

(not sure that the same issue exists for non parallel tasks)