Cursor Context Corruption on all Requests

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

Everything I do, results come back with the wrong language and data on projects that have nothing to do with anything I have ever worked on. At this point it’s around 80% of the requests – it’s un-usable at this point. I have seen this a little (maybe twice in a few years) but now it’s all the time.

Steps to Reproduce

Easy, I just do a request.

Expected Behavior

That my requests are logical. They even have different languages.

Screenshots / Screen Recordings

Operating System

Windows 10/11

Version Information

Version: 3.10.17 (user setup)
VS Code Extension API: 1.125.0
Commit: c89f45b831621cdc5e951694db44fecd8fab1150
Date: 2026-07-05T06:39:45.228Z
Layout: IDE
Build Type: Stable
Release Track: Default
Electron: 40.10.3
Chromium: 144.0.7559.236
Node.js: 24.15.0
V8: 14.4.258.32-electron.0
xterm.js: 6.1.0-beta.256
OS: Windows_NT x64 10.0.26200

For AI issues: which model did you use?

It seems to be happening with AUTO. I am testing Composer 2.5 Fast. Right now composer 2 seems ok.

Does this stop you from using Cursor

Yes - Cursor is unusable

Hi @Carlvon1800 Thank you for the post and for specifying the models where you’ve seen this. This is a known model behavior issue that we are aware of and working to reduce. Trying another model is a good workaround, tweaking the prompt, and making sure that the context window is not too filled up are all good steps to take. We’ve also seen behavior like this after repeated self-summarizations.

Thanks Kevin, I have switched to Composer 2.5 Fast for now and it seems to be working. It may be something with the AUTO system (I assume other vendors models).

I have never seen it to this extent though.

Thank you for following up! If you have a particular request that seems bad you want us to take a look at feel free to share the request ID (ideally with privacy mode disabled before you make the request). Here’s how to do that:

To disable Privacy Mode:

  1. Open Cursor Settings with Cmd+Shift+J on macOS or Ctrl+Shift+J on Windows/Linux.
  2. Go to General.
  3. Turn Privacy Mode off / switch to Share Data.

To get the Request ID:

  1. Open the relevant conversation in the Chat sidebar.
  2. Click the ... menu.
  3. Select Copy Request ID.