Context leaking between chats

Support Bug Reports
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1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

Context leaking between chats. I finish a task in chat A, then open chat B for new task. The LLM responses in chat B include information from chat A

Steps to Reproduce

Context leaking between chats. I finish a task in chat A, then open chat B for new task. The LLM responses in chat B include information from chat A

Operating System

MacOS

Version Information

Version: 2.4.23
VSCode Version: 1.105.1
Commit: 379934e04d2b3290cf7aefa14560f942e4212920
Date: 2026-01-29T21:24:23.350Z
Build Type: Stable
Release Track: Default
Electron: 39.2.7
Chromium: 142.0.7444.235
Node.js: 22.21.1
V8: 14.2.231.21-electron.0
OS: Darwin arm64 24.6.0

For AI issues: which model did you use?

Opus 4.5 thinking

Does this stop you from using Cursor

Sometimes - I can sometimes use Cursor

3

Hey, thanks for the report. This is a known issue and the team is aware.

To help with the investigation, can you share:

  • A specific example of what “leaked” from chat A into chat B
  • The Request ID from the affected response in chat B (three dots in the corner of the message > Copy Request ID)
  • Are the chats in the same workspace/project, or different ones?
  • Does this happen every time, or only sometimes?

This will help us understand the scope of the bug and prioritize a fix.

4

i think it may only happen when invoking custom workspace commands
.cursor/commands

for a specific example: in a previous chat i made some clarification (maybe with my /update-plan command), then when using the /update-plan command in a new chat, the LLM responds as if my new message contains information from the previous time I used the /update-plan command

the chats are in the same workspace

this happens frequently

i think i can reproduce it by just asking the LLM to tell me the content of the message. here is my update-plan command. the LLM response in the screenshot includes other junk from ealier conversations.
```

  1. update your plan with this information

2. do not write any code

3. present the updated plan
```

image
image1370×526 42.5 KB

ID: edfde79c-4fe6-4fb8-bd07-5b7adf36bb50

5

another reproduction
1595fdf6-7e70-4d2c-8103-255e420f4a22
it is 100% related to the workspace commands