WDS已断开连接！不断出现

Question

运行webpack-dev-server很好。首页加载正常。但是当我刷新浏览器时，每隔2秒WDS就会断开＆＃39;出现在控制台和浏览器无限重新加载。此问题仅出现在 Firefox / Firefox Developer Edition浏览器中。浏览器Chrome，Edge，IE11没有问题。

package.json:
....
"webpack": "^1.13.3",
"webpack-dev-server": "^1.16.2"

webpack.config.js:
....
entry: [
    //'app': './app/app.ts'
 'webpack-dev-server/client?http://localhost:8080/', './app/app.ts'

],
output: {
    publicPath: 'http://localhost:8080/',
    filename: 'app/app.bundle.js'
},
....

Firefox Developer Edition 51.0a2