diff --git a/README.md b/README.md
index a3b3065..7a14af6 100644
--- a/README.md
+++ b/README.md
@@ -19,9 +19,9 @@ Yet another extension for GitHub, available on both Chrome and Firefox. Inspired
 
 [![Install for Chrome](./ChromeWebStoreBadge.svg)](https://chrome.google.com/webstore/detail/gitako-github-file-tree/giljefjcheohhamkjphiebfjnlphnokk)
 
-[Or install for Firefox](https://addons.mozilla.org/en-US/firefox/addon/gitako-github-file-tree/)
+[for Edge](https://microsoftedge.microsoft.com/addons/detail/alpoloddcggjhakjemghahlkofjekbca)
 
-> Gitako for Firefox is still in beta
+[for Firefox(beta)](https://addons.mozilla.org/en-US/firefox/addon/gitako-github-file-tree/)
 
 ### Issues
 
diff --git a/package.json b/package.json
index 250205e..0be2289 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "gitako",
-  "version": "0.8.2",
+  "version": "0.8.7",
   "description": "The missing part of GitHub.",
   "repository": "https://github.com/EnixCoda/Gitako",
   "author": "EnixCoda",
@@ -56,8 +56,8 @@
     "json-loader": "^0.5.7",
     "less": "^3.9.0",
     "less-loader": "^4.0.5",
+    "mini-css-extract-plugin": "^0.9.0",
     "raw-loader": "^4.0.0",
-    "style-loader": "^0.23.1",
     "typescript": "^3.7.2",
     "uglifyjs-webpack-plugin": "^2.1.2",
     "url-loader": "^1.1.2",
diff --git a/src/analytics.ts b/src/analytics.ts
index 0fdf838..c186d8e 100644
--- a/src/analytics.ts
+++ b/src/analytics.ts
@@ -5,13 +5,45 @@ import { IN_PRODUCTION_MODE, VERSION } from 'env'
 const PUBLIC_KEY = 'd22ec5c9cc874539a51c78388c12e3b0'
 const PROJECT_ID = '1406497'
 
+const MAX_REPORT_COUNT = 10 // protect for error leaking
+let countReportedError = 0
+
+const errorSet = new Set<string>([
+  'inThisSearch is null', // weird bug in Firefox
+  'The quota has been exceeded.', // caused by other addons in Firefox
+  'NetworkError when attempting to fetch resource.', // network fail in Firefox
+  'Failed to fetch', // network fail in Chrome
+])
+
 const sentryOptions: Sentry.BrowserOptions = {
   dsn: `https://${PUBLIC_KEY}@sentry.io/${PROJECT_ID}`,
   release: VERSION,
   environment: IN_PRODUCTION_MODE ? 'production' : 'development',
   // Not safe to activate all integrations in non-Chrome environments where Gitako may not run in top context
   // https://docs.sentry.io/platforms/javascript/#sdk-integrations
-  integrations: ints => ints.filter(({ name }) => name !== 'TryCatch'),
+  defaultIntegrations: IN_PRODUCTION_MODE ? undefined : false,
+  integrations: integrations => integrations.filter(({ name }) => name !== 'TryCatch'),
+  beforeSend(event) {
+    const message = event.exception?.values?.[0].value || event.message
+    if (message) {
+      if (errorSet.has(message)) return null
+      errorSet.add(message) // prevent reporting duplicated error
+    }
+    if (countReportedError < MAX_REPORT_COUNT) {
+      ++countReportedError
+      return event
+    }
+    return null
+  },
+  beforeBreadcrumb(breadcrumb, hint) {
+    if (breadcrumb.category === 'ui.click') {
+      const ariaLabel = hint?.event?.target?.ariaLabel
+      if (ariaLabel) {
+        breadcrumb.message = ariaLabel
+      }
+    }
+    return breadcrumb
+  },
 }
 Sentry.init(sentryOptions)
 
diff --git a/src/components/FileExplorer.tsx b/src/components/FileExplorer.tsx
index e8fa97c..369460c 100644
--- a/src/components/FileExplorer.tsx
+++ b/src/components/FileExplorer.tsx
@@ -6,7 +6,7 @@ import { connect } from 'driver/connect'
 import { FileExplorerCore } from 'driver/core'
 import { ConnectorState, Props } from 'driver/core/FileExplorer'
 import * as React from 'react'
-import { useEvent } from 'react-use'
+import useEvent from 'react-use/esm/useEvent'
 import { FixedSizeList as List, ListChildComponentProps, ListProps } from 'react-window'
 import { cx } from 'utils/cx'
 import { useOnLocationChange, usePrevious } from 'utils/hooks'
diff --git a/src/components/Icon.tsx b/src/components/Icon.tsx
index 1407dbc..ec7ef44 100644
--- a/src/components/Icon.tsx
+++ b/src/components/Icon.tsx
@@ -125,16 +125,19 @@ type Props = {
 }
 
 export function Icon({ type, className = undefined, placeholder, ...otherProps }: Props) {
-  if (placeholder) return <div className={cx('octicon-wrapper')} />
-  const { name, IconComponent } = getSVGIconComponent(type)
-  const mergedClassName = cx('octicon', name)
+  let children: React.ReactNode = null
+  if (!placeholder) {
+    const { name, IconComponent } = getSVGIconComponent(type)
+    const mergedClassName = cx('octicon', name)
+    children = React.createElement(Octicon, {
+      icon: IconComponent,
+      className: mergedClassName,
+      verticalAlign: 'text-bottom',
+    })
+  }
   return (
     <div className={cx('octicon-wrapper', className)} {...otherProps}>
-      {React.createElement(Octicon, {
-        icon: IconComponent,
-        className: mergedClassName,
-        verticalAlign: 'text-bottom',
-      })}
+      {children}
     </div>
   )
 }
diff --git a/src/components/Node.tsx b/src/components/Node.tsx
index ce178ed..5ee3532 100644
--- a/src/components/Node.tsx
+++ b/src/components/Node.tsx
@@ -77,14 +77,19 @@ const NodeItemIcon = React.memo(function NodeItemIcon({
     val: { icons },
   } = useConfigs()
 
-  if (icons === 'native') return <Icon type={getIconType(node)} />
   const src = React.useMemo(
     () => (node.type === 'tree' ? getFolderIconSrc(node, open) : getFileIconSrc(node)),
     [open],
   )
+
+  if (icons === 'native') return <Icon type={getIconType(node)} />
   return (
     <>
-      <Icon placeholder={node.type !== 'tree'} type={getIconType(node)} />
+      <Icon
+        className={'node-item-type-icon'}
+        placeholder={node.type !== 'tree'}
+        type={getIconType(node)}
+      />
       {node.type === 'commit' ? (
         <Icon type={getIconType(node)} />
       ) : (
diff --git a/src/components/PJAXLink.tsx b/src/components/PJAXLink.tsx
deleted file mode 100644
index 680214e..0000000
--- a/src/components/PJAXLink.tsx
+++ /dev/null
@@ -1,14 +0,0 @@
-import * as React from 'react'
-import * as DOMHelper from 'utils/DOMHelper'
-
-type Props<P> = {
-  to: string
-  children: React.ReactElement<P>
-}
-
-export function PJAXLink<P>({ to, children }: Props<P>) {
-  return React.cloneElement(children, {
-    ...children.props,
-    onClick: () => DOMHelper.loadWithPJAX(to),
-  })
-}
diff --git a/src/components/SideBar.tsx b/src/components/SideBar.tsx
index ab69c79..68347b4 100644
--- a/src/components/SideBar.tsx
+++ b/src/components/SideBar.tsx
@@ -11,7 +11,7 @@ import { SideBarCore } from 'driver/core'
 import { ConnectorState, Props } from 'driver/core/SideBar'
 import { oauth } from 'env'
 import * as React from 'react'
-import { useEvent } from 'react-use'
+import useEvent from 'react-use/esm/useEvent'
 import { cx } from 'utils/cx'
 import * as DOMHelper from 'utils/DOMHelper'
 import { JSONRequest, parseURLSearch } from 'utils/general'
@@ -85,7 +85,7 @@ const RawGitako: React.FC<Props & ConnectorState> = function RawGitako(props) {
   // init again when setting new accessToken
   useDidUpdate(() => {
     props.init()
-  }, [accessToken])
+  }, [accessToken || '']) // fallback for preventing duplicated requests
 
   const {
     errorDueToAuth,
diff --git a/src/content.less b/src/content.less
index 81f6ee7..193302a 100644
--- a/src/content.less
+++ b/src/content.less
@@ -358,12 +358,29 @@
             transition: all 0.5s ease;
             white-space: nowrap;
 
-            &-icon {
+            .icon-size() {
               width: 16px;
               height: 16px;
+            }
+
+            .octicon-wrapper:first-child {
+              margin-right: 6px;
+            }
+
+            &-type-icon {
+              margin-right: 4px;
+              .icon-size();
+
+              & + .octicon-wrapper,
+              & + .node-item-icon {
+                margin-right: 6px;
+              }
+            }
+
+            &-icon {
+              .icon-size();
               object-fit: contain;
               vertical-align: text-bottom;
-              padding-left: 4px;
               box-sizing: content-box;
 
               &.dim {
@@ -379,12 +396,9 @@
             .node-item-label {
               overflow: hidden;
               text-overflow: ellipsis;
-
-              .node-item-name {
-                padding-left: 6px;
-              }
             }
-            .node-item:hover .node-item-name {
+
+            &:hover .node-item-name {
               text-decoration: underline;
             }
 
diff --git a/src/content.tsx b/src/content.tsx
index c9eb923..2a9c318 100644
--- a/src/content.tsx
+++ b/src/content.tsx
@@ -7,7 +7,14 @@ import './content.less'
 
 addMiddleware(withErrorLog)
 
-const SideBarElement = document.createElement('div')
-document.body.appendChild(SideBarElement)
+function init() {
+  const SideBarElement = document.createElement('div')
+  document.body.appendChild(SideBarElement)
+  ReactDOM.render(<Gitako />, SideBarElement)
+}
 
-ReactDOM.render(<Gitako />, SideBarElement)
+if (document.readyState === 'loading') {
+  document.addEventListener('DOMContentLoaded', init)
+} else {
+  init()
+}
diff --git a/src/manifest.json b/src/manifest.json
index 8f7fb24..77b3276 100644
--- a/src/manifest.json
+++ b/src/manifest.json
@@ -1,7 +1,7 @@
 {
   "manifest_version": 2,
   "name": "Gitako - Github file tree",
-  "version": "0.8.2",
+  "version": "0.8.7",
   "description": "The missing part of GitHub.",
   "author": "EnixCoda",
   "icons": {
@@ -21,6 +21,9 @@
       "matches": [
         "https://github.com/*"
       ],
+      "css": [
+        "content.css"
+      ],
       "js": [
         "firefox-shim.js",
         "browser-polyfill.js",
diff --git a/src/utils/URLHelper.ts b/src/utils/URLHelper.ts
index 6d515bb..0907583 100644
--- a/src/utils/URLHelper.ts
+++ b/src/utils/URLHelper.ts
@@ -10,7 +10,7 @@ export function parse(): MetaData & { path: string[] } {
     repoName,
     type,
     ...path // should be [...branchName.split('/'), ...filePath.split('/')]
-  ] = pathname.split('/')
+  ] = unescape(decodeURIComponent(pathname)).split('/')
   return {
     userName,
     repoName,
@@ -80,7 +80,10 @@ export function getCurrentPath(branchName = '') {
             splitBranchName.shift()
             path.shift()
           } else {
-            raiseError(new Error(`branch name and path prefix not match`))
+            raiseError(new Error(`branch name and path prefix not match`), {
+              branchName,
+              path: parse().path,
+            })
             return []
           }
         }
diff --git a/src/utils/hooks.ts b/src/utils/hooks.ts
index 67cca1c..75aa7d5 100644
--- a/src/utils/hooks.ts
+++ b/src/utils/hooks.ts
@@ -1,5 +1,5 @@
 import * as React from 'react'
-import { useLocation } from 'react-use'
+import useLocation from 'react-use/esm/useLocation'
 import { createStyleSheet, setStyleSheetMedia } from './general'
 
 export function useWindowSize(
diff --git a/src/utils/parseIconMapCSV.tsx b/src/utils/parseIconMapCSV.tsx
index ded7655..96c42e5 100644
--- a/src/utils/parseIconMapCSV.tsx
+++ b/src/utils/parseIconMapCSV.tsx
@@ -65,10 +65,14 @@ export function getFileIconSrc(node: TreeNode) {
   return getIconSrc('file', iconName)
 }
 
+// memorize for
+// 1. swap time with space
+// 2. prevent app crash on when extension context invalidates
+const extensionURL = browser.runtime.getURL('').replace(/\/$/, '')
 export function getIconSrc(type: 'folder' | 'file', name: string = 'default', open?: boolean) {
   const filename =
     (name === 'default' ? 'default_' + type : type + '_type_' + name) +
     (open ? '_opened' : '') +
     '.svg'
-  return browser.runtime.getURL(`icons/vscode/${filename}`)
+  return extensionURL + `/icons/vscode/${filename}`
 }
diff --git a/webpack.config.js b/webpack.config.js
index bd7bdb0..34a2eab 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -3,6 +3,7 @@ const CopyWebpackPlugin = require('copy-webpack-plugin')
 const ForkTsCheckerWebpackPlugin = require('fork-ts-checker-webpack-plugin')
 const path = require('path')
 const Dotenv = require('dotenv-webpack')
+const MiniCssExtractPlugin = require('mini-css-extract-plugin')
 const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin
 
 const srcPath = path.resolve(__dirname, 'src')
@@ -33,6 +34,7 @@ const plugins = [
   ]),
   new ForkTsCheckerWebpackPlugin(),
   new Dotenv(),
+  new MiniCssExtractPlugin(),
 ]
 
 const analyse = process.env.ANALYSE !== undefined
@@ -75,7 +77,7 @@ module.exports = {
       },
       {
         test: /\.less$/,
-        loader: ['style-loader', 'css-loader', 'less-loader'],
+        loader: [MiniCssExtractPlugin.loader, 'css-loader', 'less-loader'],
         include: [srcPath],
       },
       {
diff --git a/yarn.lock b/yarn.lock
index c32608c..e278fc5 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4685,7 +4685,7 @@ is-path-inside@^1.0.0:
   dependencies:
     path-is-inside "^1.0.1"
 
-is-plain-obj@^1.1.0:
+is-plain-obj@^1.0.0, is-plain-obj@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/is-plain-obj/-/is-plain-obj-1.1.0.tgz#71a50c8429dfca773c92a390a4a03b39fcd51d3e"
   integrity sha1-caUMhCnfync8kqOQpKA7OfzVHT4=
@@ -5373,6 +5373,16 @@ mimic-response@^1.0.0, mimic-response@^1.0.1:
   resolved "https://registry.yarnpkg.com/mimic-response/-/mimic-response-1.0.1.tgz#4923538878eef42063cb8a3e3b0798781487ab1b"
   integrity sha512-j5EctnkH7amfV/q5Hgmoal1g2QHFJRraOtmx0JpIqkxhBhI/lJSl1nMpQ45hVarwNETOoWEimndZ4QK0RHxuxQ==
 
+mini-css-extract-plugin@^0.9.0:
+  version "0.9.0"
+  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-0.9.0.tgz#47f2cf07aa165ab35733b1fc97d4c46c0564339e"
+  integrity sha512-lp3GeY7ygcgAmVIcRPBVhIkf8Us7FZjA+ILpal44qLdSu11wmjKQ3d9k15lfD7pO4esu9eUIAW7qiYIBppv40A==
+  dependencies:
+    loader-utils "^1.1.0"
+    normalize-url "1.9.1"
+    schema-utils "^1.0.0"
+    webpack-sources "^1.1.0"
+
 minimalistic-assert@^1.0.0, minimalistic-assert@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz#2e194de044626d4a10e7f7fbc00ce73e83e4d5c7"
@@ -5707,6 +5717,16 @@ normalize-path@^3.0.0:
   resolved "https://registry.yarnpkg.com/normalize-path/-/normalize-path-3.0.0.tgz#0dcd69ff23a1c9b11fd0978316644a0388216a65"
   integrity sha512-6eZs5Ls3WtCisHWp9S2GUy8dqkpGi4BVSz3GaqiE6ezub0512ESztXUwUB6C6IKbQkY2Pnb/mD4WYojCRwcwLA==
 
+normalize-url@1.9.1:
+  version "1.9.1"
+  resolved "https://registry.yarnpkg.com/normalize-url/-/normalize-url-1.9.1.tgz#2cc0d66b31ea23036458436e3620d85954c66c3c"
+  integrity sha1-LMDWazHqIwNkWENuNiDYWVTGbDw=
+  dependencies:
+    object-assign "^4.0.1"
+    prepend-http "^1.0.0"
+    query-string "^4.1.0"
+    sort-keys "^1.0.0"
+
 normalize-url@^4.1.0:
   version "4.5.0"
   resolved "https://registry.yarnpkg.com/normalize-url/-/normalize-url-4.5.0.tgz#453354087e6ca96957bd8f5baf753f5982142129"
@@ -6248,6 +6268,11 @@ prelude-ls@~1.1.2:
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
   integrity sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=
 
+prepend-http@^1.0.0:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/prepend-http/-/prepend-http-1.0.4.tgz#d4f4562b0ce3696e41ac52d0e002e57a635dc6dc"
+  integrity sha1-1PRWKwzjaW5BrFLQ4ALlemNdxtw=
+
 prepend-http@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/prepend-http/-/prepend-http-2.0.0.tgz#e92434bfa5ea8c19f41cdfd401d741a3c819d897"
@@ -6405,6 +6430,14 @@ qs@~6.5.1, qs@~6.5.2:
   resolved "https://registry.yarnpkg.com/qs/-/qs-6.5.2.tgz#cb3ae806e8740444584ef154ce8ee98d403f3e36"
   integrity sha512-N5ZAX4/LxJmF+7wN74pUD6qAh9/wnvdQcjq9TZjevvXzSUo7bfmw91saqMjzGS2xq91/odN2dW/WOl7qQHNDGA==
 
+query-string@^4.1.0:
+  version "4.3.4"
+  resolved "https://registry.yarnpkg.com/query-string/-/query-string-4.3.4.tgz#bbb693b9ca915c232515b228b1a02b609043dbeb"
+  integrity sha1-u7aTucqRXCMlFbIosaArYJBD2+s=
+  dependencies:
+    object-assign "^4.1.0"
+    strict-uri-encode "^1.0.0"
+
 querystring-es3@^0.2.0:
   version "0.2.1"
   resolved "https://registry.yarnpkg.com/querystring-es3/-/querystring-es3-0.2.1.tgz#9ec61f79049875707d69414596fd907a4d711e73"
@@ -7185,6 +7218,13 @@ sonic-boom@^0.7.5:
   dependencies:
     flatstr "^1.0.12"
 
+sort-keys@^1.0.0:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/sort-keys/-/sort-keys-1.1.2.tgz#441b6d4d346798f1b4e49e8920adfba0e543f9ad"
+  integrity sha1-RBttTTRnmPG05J6JIK37oOVD+a0=
+  dependencies:
+    is-plain-obj "^1.0.0"
+
 source-list-map@^2.0.0:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/source-list-map/-/source-list-map-2.0.1.tgz#3993bd873bfc48479cca9ea3a547835c7c154b34"
@@ -7395,6 +7435,11 @@ stream-to-promise@2.2.0:
     end-of-stream "~1.1.0"
     stream-to-array "~2.3.0"
 
+strict-uri-encode@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/strict-uri-encode/-/strict-uri-encode-1.1.0.tgz#279b225df1d582b1f54e65addd4352e18faa0713"
+  integrity sha1-J5siXfHVgrH1TmWt3UNS4Y+qBxM=
+
 string-width@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/string-width/-/string-width-1.0.2.tgz#118bdf5b8cdc51a2a7e70d211e07e2b0b9b107d3"
@@ -7517,14 +7562,6 @@ strip-json-comments@^2.0.1, strip-json-comments@~2.0.1:
   resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-2.0.1.tgz#3c531942e908c2697c0ec344858c286c7ca0a60a"
   integrity sha1-PFMZQukIwml8DsNEhYwobHygpgo=
 
-style-loader@^0.23.1:
-  version "0.23.1"
-  resolved "https://registry.yarnpkg.com/style-loader/-/style-loader-0.23.1.tgz#cb9154606f3e771ab6c4ab637026a1049174d925"
-  integrity sha512-XK+uv9kWwhZMZ1y7mysB+zoihsEj4wneFWAS5qoiLwzW0WzSqMrrsIy+a3zkQJq0ipFtBpX5W3MqyRIBF/WFGg==
-  dependencies:
-    loader-utils "^1.1.0"
-    schema-utils "^1.0.0"
-
 stylis@3.5.0:
   version "3.5.0"
   resolved "https://registry.yarnpkg.com/stylis/-/stylis-3.5.0.tgz#016fa239663d77f868fef5b67cf201c4b7c701e1"
@@ -8202,7 +8239,7 @@ webpack-log@^2.0.0:
     ansi-colors "^3.0.0"
     uuid "^3.3.2"
 
-webpack-sources@^1.4.0, webpack-sources@^1.4.1:
+webpack-sources@^1.1.0, webpack-sources@^1.4.0, webpack-sources@^1.4.1:
   version "1.4.3"
   resolved "https://registry.yarnpkg.com/webpack-sources/-/webpack-sources-1.4.3.tgz#eedd8ec0b928fbf1cbfe994e22d2d890f330a933"
   integrity sha512-lgTS3Xhv1lCOKo7SA5TjKXMjpSM4sBjNV5+q2bqesbSPs5FjGmU6jjtBSkX9b4qW87vDIsCIlUPOEhbZrMdjeQ==