Crash occurs when opening a cloud agent chat window

[maxime]

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

If I go to my chat history, open a chat from a cloud agent, the UI freezes for like 5s, then Cursor crashes:

The window terminated unexpectedly (reason: ‘crashed’, code: ‘5’)
We are sorry for the inconvenience. You can reopen the window to continue where you left off.

Steps to Reproduce

If I go to my chat history, open a chat from a cloud agent, the UI freezes for like 5s, then Cursor crashes:

Expected Behavior

No crash

Screenshots / Screen Recordings

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Version: 2.2.20 (Universal)
VSCode Version: 1.105.1
Commit: b3573281c4775bfc6bba466bf6563d3d498d1070
Date: 2025-12-12T06:29:26.017Z
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

For AI issues: which model did you use?

GPT-5-Extra-High

For AI issues: add Request ID with privacy disabled

bc-1ff655cc-5e77-4007-8d33-f37744363f65

Additional Information

First when I open the cloud agent chat, it shows “Environment ready”, then it’s loading the conversation, takes about 5s, then as soon as the convo loads, it freezes, the 5s later it crashes.

Same issue occurs when trying with cursor --disable-extensions

Attached are the errors that occur right before the crash occurs…

Does this stop you from using Cursor

Yes - Cursor is unusable

[deanrie]

Hey, thanks for the report. This is a known issue, the team is already working on a fix. I see the screenshots with errors before the crash.

1. Run without GPU

• Without GPU: cursor --disable-gpu
• If cursor command not found: Cmd+Shift+P > Install ‘cursor’ command

2. New clean chat

• Create a new chat with the same cloud agent in an empty folder and check if it crashes the same way

3. Logs

• Help > Open Logs Folder > attach main.log

If new crashes occur, send fresh Request IDs from the chat menu. Let me know which steps helped.