Some info-level logs are omitted when using a custom log config

[jm-alan]

Normally, when starting uvicorn via the CLI

uvicorn main:app --workers 1 --port 8000 --reload

Some helpful startup information is printed to stdout:

INFO:     Started server process [78387]
INFO:     Waiting for application startup.
INFO:     Application startup complete.
INFO:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)

It also includes WebSocket connection info, which is particularly useful for my application, as it is heavily SSE-dependent

INFO:     ('127.0.0.1', 49607) - "WebSocket /gM7LC56AaxtzEiNUx-b6d/" [accepted]
INFO:     connection open
< ... time passes ... >
INFO:     connection closed

However, when configured with a custom formatter, this startup and WebSocket connection info goes away, and only typical HTTP requests appear in the logs, even with the log level set to DEBUG

version: 1
formatters:
  level-green:
    format: "%(levelname)s - %(name)s - %(asctime)s - %(message)s"
handlers:
  stdout-debug:
    level: DEBUG
    class: logging.StreamHandler
    stream: ext://sys.stdout
    formatter: level-green
root:
  level: DEBUG
  handlers:
    [stdout-debug]

I see all of my application's DEBUG logging, along with those from its dependencies, but the startup information, and runtime websocket connection info, is gone.