Server processes not following parent signal control

[AshleighTheCutie]

Hey, another issue:
If I start the processes with a bash script, then terminate that script, the servers do not shutdown. They seem to be placed under the PID 0, which I don't think exists on Linux, and when this happens, all process signals sent to them are ignored except for SIG9. This makes it very hard to restart them, as I have to open HTop and manually kill them, as they stop responding to control signals, and seem to never have in the first place.

Once again, not sure what is needed here, so I'll supply any needed info at request.