I created a list of job (have more 10 jobs) then executed them in "Parallel". Besides, I also configured "Container Cap" under Jenkins > Configuration > cloud as 3. I expected that just 3 jobs would run at the same time and the remaining is in queue however, all jobs were executed.

However, if I dont use parallel and trigger each job manually, its behavior as expected.

Could you please let me know there is any missing?

Thanks,