请具体描述问题出现的流程，并提供能复现问题的简单代码片段（https://developers.weixin.qq.com/miniprogram/dev/devtools/minicode.html）。

同问题，onBluetoothDeviceFound第一次使用onBluetoothDeviceFound有数据，

第二次启动onBluetoothDeviceFound后onBluetoothDeviceFound无数据，扫描的设备是同一台

getBleList() {
    wx.offBluetoothDeviceFound()
    wx.onBluetoothDeviceFound((res) => {
      res.devices.forEach(item => {
        this.data.deives.push({
          name: item.name,
          device: item
        })
      })
      this.setData({
        deives: this.data.deives,
        showAll: true,
        isLoad: false
      })
      wx.hideLoading();
    })
    wx.startBluetoothDevicesDiscovery({
      app: this,
      services: [id],
      success(res) {
        console.log(res.errMsg)
        wx.showLoading({ 
          title: "正在扫描设备",
          mask: true
        });
      },
      fail(res) {
        console.log(res.errMsg)
        this.app.setData({
          isLoad: false
        })
        this.app.showFail()
      }
    })
  },