Cursor Reliably Crashes in Agent Mode whenever Editing File Every Single Time

Bug Reports
1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

For some reason Cursor is reliably crashing every single time I make an edit to a file in Agent mode. To test this I:

  • Created a new folder with no files
  • Cleared chat history
  • opened with all extensions disabled

Yet still, basically the UI freezes the moment that it goes to edit a file (the planning UI still works well).

This renders agent mode ENTIRELY unusable for me, I’m a bit disappointed by this

Steps to Reproduce

  • Created a new folder with no files
  • Cleared chat history
  • opened with all extensions disabled
  • Tell it to create an index.ts file in that empty folder

Expected Behavior

It creates a file and doesn’t freeze

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Version: 2.0.43
VSCode Version: 1.99.3
Commit: 8e4da76ad196925accaa169efcae28c45454cce0
Date: 2025-10-30T18:49:27.589Z (3 days ago)
Electron: 34.5.8
Chromium: 132.0.6834.210
Node.js: 20.19.1
V8: 13.2.152.41-electron.0
OS: Darwin arm64 25.0.0

For AI issues: which model did you use?

Tried multiple models happens with all

Does this stop you from using Cursor

Yes - Cursor is unusable

2

Hey, thanks for the report. This is a known bug in v2.0.43. Several users fixed the freezes/memory leaks by changing one setting.

Try this:

  • Open Command Palette Cmd+Shift+P → Preferences: Open User Settings (JSON)
  • Find "workbench.editor.showTabs": "single”
  • Change it to ”multiple" or remove the line
  • Restart Cursor

This setting is causing Agents layout freezes and memory leaks in the current version.

1 Like
3

Thanks this fixed the issue for me on v2.0.64

I like single tab view - will this be fixed soon?