core&ui: bug fix

packages/hydrooj/src/handler/record.ts

@@ -346,7 +346,7 @@ class RecordDetailConnectionHandler extends ConnectionHandler {
             if (!problem.canViewBy(pdoc, this.user)) throw new PermissionError(PERM.PERM_VIEW_PROBLEM_HIDDEN);
         }
 
-        this.throttleSend = throttle(this.send, 1000);
+        this.throttleSend = throttle(this.sendUpdate, 1000);
         this.rid = rid.toString();
         this.cleanup = bus.on('record/change', this.onRecordChange.bind(this));
         this.onRecordChange(rdoc);