electron: Cannot change the `enabled` state of a menu item on Linux

• Electron version: 1.8.2
• Operating system: Mac OS X Sierra, Ubuntu Linux 16.04, Windows 7

Test case

package.json

{
  "name": "ElectronMenuBug",
  "version": "0.0.1",
  "main": "index.js",
  "dependencies": {
    "electron": "^1.8.2"
  }
}

index.js

const {app, Menu, BrowserWindow} = require('electron')

app.on('ready', () => {
  let menu

  const template = [{
    label: 'File',
    submenu: [{
      label: 'Foo',
      id: 'foo',
      click: () => {
        const menuItem = menu.getMenuItemById('bar')
        menuItem.enabled = true
      }
    }, {
      label: 'Bar',
      id: 'bar',
      enabled: false
    }]
  }]

  menu = Menu.buildFromTemplate(template)

  const win = new BrowserWindow({ width: 300, height: 300 })
  win.loadURL('about:blank')

  Menu.setApplicationMenu(menu)
})

Expected behavior

After clicking on the first menu item, the second menu item should be enabled.

Actual behavior

This code works fine on Mac OS X and Windows, but it does not work on Ubuntu Linux 16.04. The menu item desperately stays disabled.

How to reproduce

Using the code above, simply type the following in the same directory:

$ npx electron .