diff --git a/packages/ui-default/backendlib/markdown.js b/packages/ui-default/backendlib/markdown.js
index 04272214c..15e26fa3d 100644
--- a/packages/ui-default/backendlib/markdown.js
+++ b/packages/ui-default/backendlib/markdown.js
@@ -24,8 +24,6 @@ const Anchor = require('markdown-it-anchor');
 const Media = require('./markdown-it-media');
 const Katex = require('./markdown-it-katex');
 
-require('prismjs/components/index');
-
 class Markdown extends MarkdownIt {
   constructor() {
     super({
diff --git a/packages/ui-default/components/highlighter/highlighter.page.js b/packages/ui-default/components/highlighter/highlighter.page.js
index 780ba9efc..3691193e6 100644
--- a/packages/ui-default/components/highlighter/highlighter.page.js
+++ b/packages/ui-default/components/highlighter/highlighter.page.js
@@ -23,11 +23,11 @@ const highlighterPage = new AutoloadPage('highlighterPage', async () => {
           const $output = $container.find(`pre.language-output${id}`);
           if ($output.length) {
             const $c = $(document.createElement('div')).addClass('row');
-            $root.clone(true).prepend($(tpl`<h2>${i18n('Sample Input')} ${id}</h2>`))
+            $root.after($c);
+            $root.prepend($(tpl`<h2>${i18n('Sample Input')} ${id}</h2>`))
               .addClass('medium-6 columns sample').appendTo($c);
             $output.parent().prepend($(tpl`<h2>${i18n('Sample Output')} ${id}</h2>`))
               .addClass('medium-6 columns sample').appendTo($c);
-            $root.replaceWith($c);
           }
         }
       }
diff --git a/packages/ui-default/components/highlighter/prismjs.js b/packages/ui-default/components/highlighter/prismjs.js
index ed1ad97de..09492b2c2 100644
--- a/packages/ui-default/components/highlighter/prismjs.js
+++ b/packages/ui-default/components/highlighter/prismjs.js
@@ -33,23 +33,19 @@ languageMeta.forEach((meta) => {
 });
 
 // Copy to Clipboard
-try {
-  Prism.plugins.toolbar.registerButton('copy-to-clipboard', (env) => {
-    const linkCopy = document.createElement('a');
-    linkCopy.href = 'javascript:;'; // eslint-disable-line no-script-url
-    linkCopy.textContent = 'Copy';
-    const clip = new Clipboard(linkCopy, { text: () => env.code });
-    clip.on('success', () => {
-      Notification.success(i18n('Content copied to clipboard!'), 1000);
-    });
-    clip.on('error', () => {
-      Notification.error(i18n('Copy failed :('));
-    });
-    return linkCopy;
+Prism.plugins.toolbar.registerButton('copy-to-clipboard', (env) => {
+  const linkCopy = document.createElement('a');
+  linkCopy.href = 'javascript:;'; // eslint-disable-line no-script-url
+  linkCopy.textContent = 'Copy';
+  const clip = new Clipboard(linkCopy, { text: () => env.code });
+  clip.on('success', () => {
+    Notification.success(i18n('Content copied to clipboard!'), 1000);
   });
-} catch (e) {
-  // snowpack
-}
+  clip.on('error', () => {
+    Notification.error(i18n('Copy failed :('));
+  });
+  return linkCopy;
+});
 
 const invisibles = {
   tab: /\t/,
@@ -90,7 +86,6 @@ function handlerInvisiblesToken(tokens, name) {
 }
 
 Prism.hooks.add('before-highlight', (env) => {
-  console.log(UserContext.showInvisibleChar);
   if (UserContext.showInvisibleChar) addInvisibles(env.grammar);
 });
 
diff --git a/packages/ui-default/package.json b/packages/ui-default/package.json
index e63fa2c3e..d64481778 100644
--- a/packages/ui-default/package.json
+++ b/packages/ui-default/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hydrooj/ui-default",
-  "version": "4.6.30",
+  "version": "4.6.31",
   "author": "undefined <i@undefined.moe>",
   "license": "AGPL-3.0",
   "main": "hydro.js",
diff --git a/packages/ui-default/snowpack.config.js b/packages/ui-default/snowpack.config.js
deleted file mode 100644
index e7c363e2b..000000000
--- a/packages/ui-default/snowpack.config.js
+++ /dev/null
@@ -1,43 +0,0 @@
-const httpProxy = require('http-proxy');
-const fs = require('fs');
-
-const reactRefreshLoc = require.resolve('react-refresh/cjs/react-refresh-runtime.development.js');
-const reactRefreshCode = `
-function d(e,t){let u;return()=>{clearTimeout(u),u=setTimeout(e,t)}};
-{ const exports = {};
-exports.performReactRefresh=d(exports.performReactRefresh,30);\
-${fs.readFileSync(reactRefreshLoc, { encoding: 'utf-8' })
-    .replace('process.env.NODE_ENV', JSON.stringify('development'))}
-window.$RefreshRuntime$=exports;\
-window.$RefreshRuntime$.injectIntoGlobalHook(window);\
-window.$RefreshReg$=()=>{};\
-window.$RefreshSig$=()=>t=>t; }`;
-
-const proxy = httpProxy.createServer({ target: 'http://localhost:2333' });
-const dest = (req, res) => proxy.web(req, res, undefined, (e) => console.error(e.message));
-const refresh = (req, res) => {
-  res.write(reactRefreshCode);
-  res.end();
-};
-const hmr = async (req, res) => {
-  // eslint-disable-next-line no-multi-str
-  req.headers.hmr = Buffer.from('<script src="/react-refresh.js"></script>').toString('base64');
-  proxy.web(req, res, undefined, (e) => console.error(e.message));
-};
-
-module.exports = {
-  entry: 'hydro.js',
-  env: process.env,
-  plugins: [
-    ['./build/plugins/require-context.snowpack', { input: ['misc/PageLoader.js'] }],
-    './build/plugins/provide.snowpack',
-    '@snowpack/plugin-react-refresh',
-  ],
-  alias: { vj: __dirname },
-  routes: [
-    ['/.*', 'routes', hmr],
-    ['/react-refresh\\.js', 'all', refresh],
-    ['.+\\.(png|css|json|woff2|woff|ttf)', 'all'],
-    ['(/ui-constants\\.js|/locale/.*)', 'all'],
-  ].map(([src, match, handle]) => ({ src, match, dest: handle || dest })),
-};