it causes windows 10 to delay shutdown
If one program blocks shutdown, then all programs block shutdown:
https://devblogs.microsoft.com/oldnewth ... /?p=103671
Process Hacker is the last application to be shutdown by design since its a Task Manager application and required to shutdown last.
Process Hacker literally does nothing before/during shutdown and you will only see Process Hacker listed on the shutdown blocking page because something else is blocking shutdown and since Process Hacker is the last application it'll also be shown on the dialog per the above blog post.