Server process is not killed if shutdown script fails or is empty with Deploy-only server adapter

As you said in JBIDE-7515, when you specify startup and shutdown scripts with a deploy-only server, the server process should be killed if the shutdown script fails. But that is not the case.

From JBIDE-7515:

I left the shutdown script empty.
You said that if the shutdown script fails, the process ID will be killed. Maybe technically an empty command does not fail, but I believe in this case the running java process should still be killed and it isn't.
In fact, it doesn't work even if I put something that will fail there, e.g. "exit 1".

The shutdown should default to process kill even if the shutdown script is empty.