using jenkins version 2.235.2 for CI/CD and its not closing threads automatically.when new pipeline run  its creating new threads  and keeping all  plunging file details in that thread open(around 20000 files on each thread). thread count is getting increase until not restart  Jenkins. when we restart at  that time thread count around 250 and after  4-5 day if we are checking  thread count is around 1000.

even  we tried with  garbage collection  but after that also thread  count in not decreasing

please  find the  attachment for monitoring  pluging output