Error changing plugin path

[Julen10]

Environment

Symfony 4.2.8

Symfony packages

$ composer show --latest 'symfony/*'

Symfony flex ones

Subject

I can´t change the plugin path, it just takes the default path

Steps to reproduce

Install plugin and add this:

fos_ck_editor:
    default_config: simple_config
    configs:
        simple_config:
            extraPlugins:
                - 'wordcount'
                - 'notification'
        plugins:
            wordcount:
                path: 'fosckeditor/plugins/wordcount/'
                filename: 'plugin.js'
            notification:
                path: 'fosckeditor/plugins/notification/'
                filename: 'plugin.js'

Expected results

The plugin changes from localhost:8080/bundles/fosckeditor/plugins/wordcount/plugin.js to localhost:8080/fosckeditor/plugins/wordcount/plugin.js

Actual results