diff --git a/packages/build-user-config/src/userConfig/polyfill.js b/packages/build-user-config/src/userConfig/polyfill.js
index 757d2b6b53..b0422c95c9 100644
--- a/packages/build-user-config/src/userConfig/polyfill.js
+++ b/packages/build-user-config/src/userConfig/polyfill.js
@@ -8,9 +8,7 @@ module.exports = (config, polyfill) => {
   };
   if (typeof polyfill === 'string') {
     presetEnvParam.corejs = 3;
-    if (polyfill === 'usage') {
-      injectTransformRuntime(config);
-    } else if (polyfill === 'entry') {
+    if (polyfill === 'entry') {
       const entries = config.toConfig().entry;
       const rule = config.module.rule('polyfill').test(/\.jsx?|\.tsx?$/);
       const fileList = [];
@@ -34,7 +32,12 @@ module.exports = (config, polyfill) => {
       });
       rule.use('polyfill-loader').loader(require.resolve('../utils/polyfillLoader')).options({});
       addBablePlugins(config, [[require.resolve('../utils/babelPluginCorejsLock.js'), { fileList }]]);
+    } else {
+      injectTransformRuntime(config);
     }
+  } else if (polyfill === false) {
+    // inject async/await polyfill
+    injectTransformRuntime(config);
   }
   processPresetEnv(config, presetEnvParam);
 };
diff --git a/packages/plugin-rax-app/package.json b/packages/plugin-rax-app/package.json
index bb1ae584a4..0f31c3a9a7 100644
--- a/packages/plugin-rax-app/package.json
+++ b/packages/plugin-rax-app/package.json
@@ -1,6 +1,6 @@
 {
   "name": "build-plugin-rax-app",
-  "version": "6.0.0",
+  "version": "6.0.1",
   "description": "The basic webpack configuration for rax project",
   "author": "Rax Team",
   "main": "lib/index.js",
diff --git a/packages/plugin-rax-app/src/config.js b/packages/plugin-rax-app/src/config.js
index 495362a006..da8490cbf3 100644
--- a/packages/plugin-rax-app/src/config.js
+++ b/packages/plugin-rax-app/src/config.js
@@ -41,9 +41,9 @@ module.exports = [
     configWebpack: require('./userConfig/inlineStyle'),
     validation: 'boolean'
   },
-  { 
+  {
     name: 'polyfill',
-    defaultValue: 'usage'
+    defaultValue: false
   },
   {
     name: 'compileDependencies',
diff --git a/packages/plugin-rax-app/src/setDev.js b/packages/plugin-rax-app/src/setDev.js
index f29fe612bf..4faef75255 100644
--- a/packages/plugin-rax-app/src/setDev.js
+++ b/packages/plugin-rax-app/src/setDev.js
@@ -28,6 +28,7 @@ module.exports = function(api) {
   let webMpa = false;
   let weexMpa = false;
   let krakenMpa = false;
+  let isFirstCompile = true;
   const getWebpackEntry = (configs, configName) => {
     const taskConfig = configs.find((webpackConfig) => webpackConfig.name === configName);
     if (!taskConfig || !taskConfig.entry) {
@@ -121,7 +122,8 @@ module.exports = function(api) {
       if (targets.includes(WEB)) {
         console.log(highlightPrint('  [Web] Development server at: '));
         // do not open browser when restart dev
-        const shouldOpenBrowser = !commandArgs.disableOpen && !process.env.RESTART_DEV;
+        const shouldOpenBrowser = !commandArgs.disableOpen && !process.env.RESTART_DEV && isFirstCompile;
+        isFirstCompile = false;
         if (webEntryKeys.length > 0) {
           let openEntries = [];
           if (commandArgs.mpaEntry) {
diff --git a/packages/plugin-rax-kraken/package.json b/packages/plugin-rax-kraken/package.json
index 1a893b4559..5289df9353 100644
--- a/packages/plugin-rax-kraken/package.json
+++ b/packages/plugin-rax-kraken/package.json
@@ -1,6 +1,6 @@
 {
   "name": "build-plugin-rax-kraken",
-  "version": "1.0.5",
+  "version": "1.0.6",
   "description": "rax kraken app plugin",
   "main": "lib/index.js",
   "scripts": {
diff --git a/packages/plugin-rax-kraken/src/setEntry.js b/packages/plugin-rax-kraken/src/setEntry.js
index bb200543a8..61fc5a8630 100644
--- a/packages/plugin-rax-kraken/src/setEntry.js
+++ b/packages/plugin-rax-kraken/src/setEntry.js
@@ -3,18 +3,10 @@ const path = require('path');
 
 module.exports = (config, context) => {
   const { rootDir } = context;
-  const target = 'kraken';
-
   // SPA
   const appEntry = moduleResolve(formatPath(path.join(rootDir, './src/app')));
   const entryConfig = config.entry('index');
 
-  config.module.rule('platform-loader')
-    .use('platform-loader')
-    .options({
-      platform: target,
-    });
-
   entryConfig.add(appEntry);
 };
 
diff --git a/packages/rax-app/package.json b/packages/rax-app/package.json
index f276d87d87..b0c5ad5fd5 100644
--- a/packages/rax-app/package.json
+++ b/packages/rax-app/package.json
@@ -1,6 +1,6 @@
 {
   "name": "rax-app",
-  "version": "3.0.7",
+  "version": "3.0.8",
   "description": "command line interface and builtin plugin for rax app",
   "author": "ice-admin@alibaba-inc.com",
   "homepage": "https://github.com/alibaba/ice#readme",
@@ -16,11 +16,11 @@
   "dependencies": {
     "@alib/build-scripts": "^0.1.24",
     "build-plugin-app-core": "0.1.23",
-    "build-plugin-rax-app": "6.0.0",
+    "build-plugin-rax-app": "6.0.1",
     "build-plugin-ice-store": "1.7.8",
     "build-plugin-rax-web": "1.0.6",
     "build-plugin-rax-weex": "1.0.6",
-    "build-plugin-rax-kraken": "1.0.5",
+    "build-plugin-rax-kraken": "1.0.6",
     "build-plugin-rax-miniapp": "1.1.0",
     "build-plugin-ssr": "1.0.6",
     "chokidar": "^3.3.1",