Photo AI Beta and perl5.30 orphan processes

the latest beta leaves a lot of perl5.30 orphan processes on my machine. That’s annoying because I keep my LR libraries on external disks and I can’t expel the volume when I finish even after closing LR and PhotoAI. The only workarounds are:

  1. Force eject the volume or
  2. kill the processes from activity monitor.
    Any ideas?