Symfony version(s) affected: 4.2

Description
The logs are not shown while we launch server:log. The only way to show them is to add -vvv option.

How to reproduce

// config/packages/dev/monolog.yaml
monolog:
    handlers:
        server_log:
            type: server_log
            host: 0:9911

And run server:log.

Possible Solution

The ConsoleHandler checks the verbosity level. By default the normal verbosity maps to the warning level log. IMO, the --filter option should be the only one responsible of the level.

Additional context