我认为这是一个Kibana bug --当你调查w/ Chrome Devtools时，你会看到代理请求的有效负载比它应该的更早终止。尝试像这样美化有效负载，它应该可以工作：

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    }
  },
  "_source":{
    "includes":[
      "title"
    ]
  }
}

值得提交一份bug报告。