I have forgotten to comment that our processes are not being run on boot of the computer because of this crash.

We have exactly the same problem :( In Console.app, do you see any crash of sh related to your .plist?

We are seeing the same behavior in macOS 13.1 RC (22C65). Are you experiencing the same with this Release Candidate?

We are seeing the same behavior with latest Ventura 13.1 (22C65) And we see that, in System Settings -> General -> Login Items, sh is shown as an "Item from unidentifier dveloper." Is this normal?