Service started twice but instances is 1?

Hello.

I just deployed my first app to Render. I noticed this in the deployment logs:

Nov 22 07:16:14 PM  ==> Deploying...
Nov 22 07:16:39 PM  ==> Starting service with '_build/prod/rel/kepler/bin/kepler start'
Nov 22 07:17:09 PM  19:17:09.561 [info] Running KeplerWeb.Endpoint with cowboy 2.8.0 at :::10000 (http)
...
Nov 22 07:17:09 PM  ==> Starting service with '_build/prod/rel/kepler/bin/kepler start'
Nov 22 07:17:29 PM  19:17:29.817 [info] Running KeplerWeb.Endpoint with cowboy 2.8.0 at :::10000 (http)
...

I’m on the most basic plans and instances is set to 1, so I wonder why I see this message twice? There are no errors whatsoever, everything seems to be running smoothly.

Update:

I also noticed (on a subsequent deploy) that the first service is being killed :thinking:

Nov 22 10:07:28 PM  22:07:28.108 [info] SIGTERM received - shutting down

I wonder why that is?