Plan mode is skipped by some models

[erikpr1994 (Erik Pastor Rios)]

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

I tried to run the plan mode with both Gemini 3 Pro and Opus 4.5, and instead of creating a plan, they directly implement stuff.

Steps to Reproduce

Set plan mode and select Gemini 3 Pro and Opus 4.5

Expected Behavior

A plan is created

Screenshots / Screen Recordings

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Version: 2.1.36
VSCode Version: 1.105.1
Commit: 9cd7c8b6cebcbccc1242df211dee45a4b6fe15e0
Date: 2025-11-26T03:43:48.079Z
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

Does this stop you from using Cursor

No - Cursor works, but with this issue

[deanrie]

Hey, thanks for the report. This is a known bug that’s already been confirmed by our team. Plan Mode should create a plan and wait for approval before implementing, but it’s currently jumping straight to implementation for some users across multiple models.

This issue has been noticed with other models as well (Claude Sonnet 4.5 Thinking), so it’s not specific to Gemini 3 Pro or Opus 4.5.

To help the team investigate, could you please share:

• Request ID from the affected chat (Chat menu → Copy Request ID)
• The specific prompt/task you gave when this occurred

The team is already aware of this issue and is working on a fix.