Cursor is freeze and break

Bug Reports
1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

If you see a diff branch in the item while making a comment in chat, it stops unconditionally.

I’m always careful not to type the diff branch when I make a comment.

Am I the only one who has this problem? Is there a solution?

The peculiar thing is that I use notepads a lot

Steps to Reproduce

  1. Open the Chat
  2. mention anything @…
  3. show diff branch in list
  4. freeze and restart cursor

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

i always update recent version

The same thing happens in any version

Version: 2.1.46
VSCode Version: 1.105.1
Commit: ab326d0767c02fb9847b342c43ea58275c4b1680
Date: 2025-12-02T03:59:29.283Z
Electron: 37.7.0
Chromium: 138.0.7204.251
Node.js: 22.20.0
V8: 13.8.258.32-electron.0
OS: Darwin arm64 25.1.0

Does this stop you from using Cursor

No - Cursor works, but with this issue

2

Hey, thanks for the report. To narrow down the cause of the hang when typing @ in chat with the branches/diffs list appearing.
Please:

  • Check if it reproduces with extensions disabled: launch Cursor from the terminal with the flag: cursor --disable-extensions
  • Open Process Explorer: Cmd+Shift+P → Developer: Open Process Explorer and take a screenshot during the hang (interested in peaks of extensionHost/ptyHost)
  • Enable extension monitoring: Settings → Application → Experimental → enable Extension Monitor Enabled, reproduce again and send a screenshot
  • Record a short video/screenshot of the dropdown list with “diff branch” and exact steps (what you type after @)
  • Specify the list of installed extensions

If the bug reproduces even without extensions, send the results above - I’ll pass them to the team.