Auto mode thinking output becomes mixed-language garbled text

Describe the Bug

When using Auto mode in Cursor, the thinking output sometimes becomes garbled text composed of multiple languages mixed together. The text appears meaningless and does not correspond to the user request.

Example output:
···
bagian一键哭笑疼爱国强康复他觉得这是一个 Foods-model septemberariatumbing द是以圃丹药病因茶杯тация母亲 Concerns。《 Pian volcanoes
···

This looks like a random mixture of Chinese, English, Hindi, Cyrillic, and other fragments.

The issue was first observed at 19:30 (UTC+8) and is still occurring.

Steps to Reproduce

  1. Open Cursor.
  2. Select Auto mode.
  3. Submit a request in the chat panel.
  4. Observe the thinking output.

Expected Behavior

The thinking output should contain coherent reasoning related to the user request, rather than random mixed-language or garbled text.

Operating System

MacOS

Version Information

Version: 2.6.19 (Universal)
VSCode Version: 1.105.1
Commit: 224838f96445be37e3db643a163a817c15b36060
Date: 2026-03-12T04:07:27.435Z
Build Type: Stable
Release Track: Default
Electron: 39.4.0
Chromium: 142.0.7444.265
Node.js: 22.22.0
V8: 14.2.231.22-electron.0
OS: Darwin x64 24.6.0

For AI issues: which model did you use?

auto mode

Does this stop you from using Cursor

Sometimes - I can sometimes use Cursor

A post was merged into an existing topic: It keep writing ‘natural natural natural natural natural natural