diff --git a/examples/reverse_proxy/Caddyfile b/examples/reverse_proxy/Caddyfile
new file mode 100644
index 00000000..28792912
--- /dev/null
+++ b/examples/reverse_proxy/Caddyfile
@@ -0,0 +1,6 @@
+hydro.ac {
+  reverse_proxy http://localhost:8888 {
+    header_up x-real-ip {remote_host}
+    header_up x-real-host {hostport}
+  }
+}
diff --git a/packages/hydrooj/package.json b/packages/hydrooj/package.json
index f8081a85..ae12d6f4 100644
--- a/packages/hydrooj/package.json
+++ b/packages/hydrooj/package.json
@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "2.32.20",
+    "version": "2.32.21",
     "bin": "bin/hydrooj.js",
     "main": "src/loader",
     "module": "src/loader",
diff --git a/packages/hydrooj/src/handler/judge.ts b/packages/hydrooj/src/handler/judge.ts
index 67a3d57a..b9d974ac 100644
--- a/packages/hydrooj/src/handler/judge.ts
+++ b/packages/hydrooj/src/handler/judge.ts
@@ -34,18 +34,21 @@ export async function postJudge(rdoc: RecordDoc) {
     const pdoc = (accept && updated)
         ? await problem.inc(rdoc.pdomain, rdoc.pid, 'nAccept', 1)
         : await problem.get(rdoc.pdomain, rdoc.pid);
-    const difficulty = difficultyAlgorithm(pdoc.nSubmit, pdoc.nAccept);
-    await Promise.all([
-        problem.edit(pdoc.domainId, pdoc.docId, { difficulty }),
-        problem.inc(pdoc.domainId, pdoc.docId, `stats.${builtin.STATUS_SHORT_TEXTS[rdoc.status]}`, 1),
-        problem.inc(pdoc.domainId, pdoc.docId, `stats.s${rdoc.score}`, 1),
-    ]);
+    if (pdoc) {
+        const difficulty = difficultyAlgorithm(pdoc.nSubmit, pdoc.nAccept);
+        await Promise.all([
+            problem.edit(pdoc.domainId, pdoc.docId, { difficulty }),
+            problem.inc(pdoc.domainId, pdoc.docId, `stats.${builtin.STATUS_SHORT_TEXTS[rdoc.status]}`, 1),
+            problem.inc(pdoc.domainId, pdoc.docId, `stats.s${rdoc.score}`, 1),
+        ]);
+    }
     await bus.serial('record/judge', rdoc, updated);
 }
 
 export async function next(body: JudgeResultBody) {
     body.rid = new ObjectID(body.rid);
     let rdoc = await record.get(body.rid);
+    if (!rdoc) return;
     const $set: Partial<RecordDoc> = {};
     const $push: any = {};
     if (body.case) {
@@ -72,7 +75,7 @@ export async function next(body: JudgeResultBody) {
     if (body.memory !== undefined) $set.memory = body.memory;
     if (body.progress !== undefined) $set.progress = body.progress;
     rdoc = await record.update(rdoc.domainId, body.rid, $set, $push);
-    bus.broadcast('record/change', rdoc, $set, $push);
+    bus.broadcast('record/change', rdoc!, $set, $push);
 }
 
 export async function end(body: JudgeResultBody) {
diff --git a/packages/hydrooj/src/model/record.ts b/packages/hydrooj/src/model/record.ts
index 42aa6746..316f3df3 100644
--- a/packages/hydrooj/src/model/record.ts
+++ b/packages/hydrooj/src/model/record.ts
@@ -141,7 +141,7 @@ class RecordModel {
     }
 
     static getMulti(domainId: string, query: any) {
-        return RecordModel.coll.find({ ...query, domainId });
+        return RecordModel.coll.find({ domainId, ...query });
     }
 
     static async update(
diff --git a/packages/ui-default/package.json b/packages/ui-default/package.json
index 04eeacd2..25a82090 100644
--- a/packages/ui-default/package.json
+++ b/packages/ui-default/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hydrooj/ui-default",
-  "version": "4.17.4",
+  "version": "4.17.5",
   "author": "undefined <i@undefined.moe>",
   "license": "AGPL-3.0",
   "main": "hydro.js",
diff --git a/packages/ui-default/pages/record_main.page.js b/packages/ui-default/pages/record_main.page.js
index 895ea654..0c5c3e7c 100644
--- a/packages/ui-default/pages/record_main.page.js
+++ b/packages/ui-default/pages/record_main.page.js
@@ -22,6 +22,7 @@ const page = new NamedPage('record_main', async () => {
       $oldTr.trigger('vjContentNew');
     } else {
       $('.record_main__table tbody').prepend($newTr);
+      $('.record_main__table tbody tr:last').remove();
       $newTr.trigger('vjContentNew');
     }
   };
diff --git a/packages/ui-default/templates/record_main_tr.html b/packages/ui-default/templates/record_main_tr.html
index 973b03bb..7b0ed090 100644
--- a/packages/ui-default/templates/record_main_tr.html
+++ b/packages/ui-default/templates/record_main_tr.html
@@ -20,6 +20,7 @@
   {% else %}
     *
   {% endif %}
+  {% if rdoc.input %}({{ _('Pretest') }}){% endif %}
   </td>
   <td class="col--submit-by">
     <a href="{{ url('user_detail', uid=rdoc.uid) }}">