com.internetitem.logback.elasticsearch.writer.LoggerWriter ignores logging level from logback.xml config

[pakru]

I using elasticsearch-appender in my app with spring_boot-2.2.5.RELEASE

I have the following config in my logback-spring.xml:

<logger name="com.internetitem.logback.elasticsearch.writer.LoggerWriter" level="ERROR" additivity="false">
        <appender-ref ref="Console"/>
    </logger>

    <root level="INFO">
        <appender-ref ref="Console"/>
        <appender-ref ref="ELASTIC"/>
    </root>

But I receive lots of INFO log messages to console from com.internetitem.logback.elasticsearch.writer.LoggerWriter despite my setting level="ERROR" of this logger.
All other loggers levels works fine.
The only solution is to set root level to "ERROR".