Error in planning mode

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

Whenever I let the model create a plan, it generates a plan, but then any sequential command to adapt the plan does not change the todos. Also, sometimes even initially, the todo list creation fails.

Steps to Reproduce

Run any edit in plan mode and then try to change the plan by prompting the model.

Operating System

Windows 10/11

Current Cursor Version (Menu → About Cursor → Copy)

Version: 2.1.34 (system setup)
VSCode Version: 1.105.1
Commit: 609c37304ae83141fd217c4ae638bf5321856500
Date: 2025-11-25T16:35:52.391Z (2 hrs ago)
Electron: 37.7.0
Chromium: 138.0.7204.251
Node.js: 22.20.0
V8: 13.8.258.32-electron.0
OS: Windows_NT x64 10.0.26200

Does this stop you from using Cursor

No - Cursor works, but with this issue

Hey, thanks for the report. This is a known issue in Planning Mode that appeared in version 2.1.0 and is currently being investigated by the team.

The team is tracking it here: Planner broken in 2.1.0

Could you share a Request ID from a failed planning attempt so we can link your case?

Chat menu (top right) → Copy Request ID

Temporary workarounds:

  • Try starting a new plan instead of editing existing ones
  • If you’ve saved plans to .cursor/plans/, you can edit the markdown there directly

The team is actively working on a fix.

I had the same kind of bug too. request link: 5fa30bca-5921-47cf-9229-a8dbe834f8c2

the AI just refused to edit plan because some toll call error

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