Issue with output kafka multiple topics

[svasilyev (Сергей Васильев)]

i use filebeat 7.8.0 in Docker-Compose
OS rhel 7

When I try to write logs for multiple topics in kafka, the logs are added to kafka (always one topic (containerlogs) with no selection)
logs are received at the time of launch and no more of them are added to the kafka until the container is restarted

flibeat.yml

name: filebeat.host
logging.level: info
filebeat.inputs:
- type: log
  enabled: true
  paths:
    - /var/lib/docker/containers/*/*-json.log
  fields:
    log_topic: 'containerlogs'
- type: log
  enabled: true
  fields:
    log_topic: 'kafkalogs'
  paths:
    - /var/log/kafka/*.log
#
output.kafka:
  hosts: [ "kafka_sasl_ssl_server:9093" ]
  username: 'filebeat'
  password: 'filebeat-password'
  ssl.enabled: true
  ssl.certificate_authorities: ["root-ca.crt"]
  topic: '%{[fields.kafka_topic]}'
  compression: none
  max_retries: -1
  backoff.max: 10s
  required_acks: 1

fields are visible in the ElasticSearch server (with scheme filebeat->kafka<-logstash->elasticsearch)

    "host": {
      "name": "npz-09.vm.cmx.ru"
    },
    "@version": "1",
    "fields": {
      "log_topic": "containerlogs"
    },
    "@timestamp": "2020-07-23T09:29:33.928Z"
  },
  "fields": {
    "@timestamp": [
      "2020-07-23T09:29:33.928Z"
    ]
  },

if change topic: 'containerlogs' it works correctly

Help me please correct use fileds setting and mapping multiple kafka topics.