Removing respawn would be worth testing.
CP does use forks when the app starts to run as a daemon, but thats not support on Windows or in .net, so we can’t do something similar, they may also do updates via git pull. SAB has never had auto update, have they?
isn’t it service stop nzbdrone?
You can now have a script that performs the update, which can be set on the general settings page, the script will have to take care of stopping/copying/starting. The built in update won’t handle this automatically.