diff --git a/packages/hydrooj/package.json b/packages/hydrooj/package.json
index 2af76d601..9892c4088 100644
--- a/packages/hydrooj/package.json
+++ b/packages/hydrooj/package.json
@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "3.9.2",
+    "version": "3.9.3",
     "bin": "bin/hydrooj.js",
     "main": "src/loader",
     "module": "src/loader",
diff --git a/packages/hydrooj/src/handler/problem.ts b/packages/hydrooj/src/handler/problem.ts
index 4a5fc3335..07ea58198 100644
--- a/packages/hydrooj/src/handler/problem.ts
+++ b/packages/hydrooj/src/handler/problem.ts
@@ -445,6 +445,7 @@ export class ProblemSubmitHandler extends ProblemDetailHandler {
             throw new BadRequestError('Language not allowed.');
         }
         if (pretest && setting.langs[lang]?.pretest) lang = setting.langs[lang].pretest;
+        if (pretest && setting.langs[lang]?.pretest === false) throw new BadRequestError('Cannot run pretest for this language.');
         if (pretest && !['default', 'fileio', 'remote_judge'].includes(this.response.body.pdoc.config?.type)) {
             throw new BadRequestError('unable to run pretest');
         }
diff --git a/packages/ui-default/components/scratchpad/ScratchpadToolbarContainer.jsx b/packages/ui-default/components/scratchpad/ScratchpadToolbarContainer.jsx
index 264403331..536054e20 100644
--- a/packages/ui-default/components/scratchpad/ScratchpadToolbarContainer.jsx
+++ b/packages/ui-default/components/scratchpad/ScratchpadToolbarContainer.jsx
@@ -99,6 +99,7 @@ export default connect(mapStateToProps, mapDispatchToProps)(class ScratchpadTool
     if (UiContext.pdoc.config?.type === 'remote_judge') {
       if (window.LANGS[this.props.editorLang].pretest) canUsePretest = true;
     }
+    if (window.LANGS[this.props.editorLang].pretest === false) canUsePretest = false;
     return (
       <Toolbar>
         {canUsePretest && (
diff --git a/packages/ui-default/components/scratchpad/reducers/ui.js b/packages/ui-default/components/scratchpad/reducers/ui.js
index fa706f5c2..6836fd07f 100644
--- a/packages/ui-default/components/scratchpad/reducers/ui.js
+++ b/packages/ui-default/components/scratchpad/reducers/ui.js
@@ -55,6 +55,10 @@ export default function reducer(state = {
   case 'SCRATCHPAD_POST_SUBMIT_PENDING': {
     return {
       ...state,
+      records: {
+        ...state.records,
+        visible: true,
+      },
       isPosting: true,
     };
   }
diff --git a/packages/ui-default/package.json b/packages/ui-default/package.json
index 4dc0c1b0b..92c5f5c43 100644
--- a/packages/ui-default/package.json
+++ b/packages/ui-default/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hydrooj/ui-default",
-  "version": "4.34.1",
+  "version": "4.34.2",
   "author": "undefined <i@undefined.moe>",
   "license": "AGPL-3.0",
   "main": "hydro.js",