gx_it_proxy not stopped properly

[abretaud]

Hi!
We've upgraded usegalaxy.fr to 22.05 and switched gravity.
I have a little problem for the gx_it_proxy process: it seems like gravity fails to stop it properly.
When I start it, I get these processes:

galaxy   1143118  5.2  0.1 772872 44440 ?        Sl   11:12   0:01 npm exec gx-it-proxy --ip 0.0.0.0 --port 8000 --sessions /foobar/interactivetools_map.sqlite --verbose
galaxy   1143132  0.0  0.0   2608   596 ?        S    11:12   0:00 sh -c gx-it-proxy "--ip" "0.0.0.0" "--port" "8000" "--sessions" "/foobar/interactivetools_map.sqlite" "--verbose"
galaxy   1143133  1.3  0.0 820016 27052 ?        Sl   11:12   0:00 node /blablabla/node_modules/.bin/gx-it-proxy --ip 0.0.0.0 --port 8000 --sessions /foobarinteractivetools_map.sqlite --verbose

Running galaxyctl stop gx-it-proxy kills the first 2 processes, but not the third one.
Any idea what could be wrong?

(It's annoying because I get an error when trying a graceful restart, when it tries to stop/restart the proxy, and fails with "port already in use")

[abretaud]

Adding stopasgroup=true in the generated supervisor conf fixes it (found this in https://stackoverflow.com/questions/67487983/supervisord-not-killing-all-spawned-node-processes-on-stop-command)