为什么同声传译onStop事件不触发？

const plugin = requirePlugin("WechatSI");

let manager = plugin.getRecordRecognitionManager();

// Events

const INPUT_COMPLETE = "inputComplete"

// io/voice.js

Component({

 /**

  * Component properties

  */

 properties: {

   lang: {

     type: String,

     value: 'zh_CN'

   }

 },

 created: function() {

   console.log('created')

   let that = this

   manager.onStart = function(res) {

     console.log("manager.Start", res)

     that.triggerEvent(INPUT_COMPLETE, 'start')

   }

   // 识别结束事件

   manager.onStop = function(res) {

     console.log("manager.onStop")

   }

   manager.onError = function(res) {

     console.log('manager.onError')

   }

 },

 /**

  * Component initial data

  */

 data: {

 },

 /**

  * Component methods

  */

 methods: {

   recordStart() {

     let lang = this.properties.lang

     manager.start({

       lang,

     })

   },

   recordEnd() {

     console.log('recordEnd')

     manager.stop()

   }

 }

})