为什么Babel在React-hot-loader中没有编译某些功能？

我正在使用transform-class-properties。当我更改按钮文本等内容时，一切正常，但是当我修改如下所示的函数时：

class App extends React.Component {

    fetchUser = (e) => {
        axios.get('/api/test/' + this.state.username)
            .then(function (response) {
                console.log(response.data);
            }).catch(function (response) {
            console.log(response);
        });
    };
}

在手动刷新页面之前，该操作没有任何效果。我在控制台中看到一些输出：

[React Transform HMR] Patching App
log-apply-result.js?d762:20 [HMR] Updated modules:
log-apply-result.js?d762:22 [HMR]  - 76

但是直到刷新后我的更改才会出现。该功能正在运行（transform-class-properties），但是它对于更改是无懈可击的。当我添加类似内容console.log('foobar');并按下按钮时，没有任何反应。我的意思是没有新的事情发生。当我更改了ES6可以按预期理解此正常工作的普通类方法语法的语法时，我看到console.log处于“实时”状态而没有刷新，因此我认为在编译过程中出了点问题。

这是我的webpack.development.config.js文件：

const webpack = require('webpack');
const path = require('path');
const NpmInstallPlugin = require('npm-install-webpack-plugin');

const PATHS = {
    app: path.join(__dirname, 'resources/assets/js'),
    publicPath: path.join(__dirname, 'public')
};

module.exports = {
    entry: [
        "webpack-dev-server/client?http://localhost:4444",
        "webpack/hot/dev-server",
        PATHS.app
    ],
    output: {
        path: PATHS.publicPath,
        publicPath: '/js/',
        filename: 'bundle.js'
    },
    module: {
        loaders: [
            {
                test: /\.jsx?$/,
                loader: "react-hot",
                exclude: /node_modules/
            },
            {
                test: /\.jsx?$/,
                include: PATHS.app,
                loader: 'babel-loader',
                query: {
                    presets: ['react', 'es2015', 'stage-0', 'react-hmre'], // set of plugins out of the box
                    plugins: ['react-html-attrs', 'transform-class-properties', 'transform-decorators-legacy']
                }
            }
        ]
    },
    devtool: 'eval-source-map',
    devServer: {
        contentBase: PATHS.publicPath,
        historyApiFallback: true,
        hot: true,
        inline: true,
        progress: true,
        noInfo: false,
        stats: 'errors-only',
        host: process.env.HOST,
        port: 4444,
        proxy: {
            "/api/*": "http://127.0.0.1:8000/"
        }
    },
    plugins: [
        new webpack.HotModuleReplacementPlugin(),
        new NpmInstallPlugin({
            save: true
        })
    ]
};