Triplicated changes in source code with Composer 1

[rfroli]

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

I’ve seen this bug twice already, but I don’t have a way to reproduce it.
Composer 1 applies the same changes multiple times to the same sections of code. I have to validate them three times, as if the modifications had been applied by several independent agents beforehand.

Steps to Reproduce

There is no way to reproduce the bug systematically; it “sometimes” happens.
On the screen, you can see

• the code to remove 3 times in red
• the new code 1 time in green
  you must apply the changes 3 times

Expected Behavior

Changes should be suggested and applied only once.

Operating System

Windows 10/11

Current Cursor Version (Menu → About Cursor → Copy)

Version: 2.0.77 (user setup)
VSCode Version: 1.99.3
Commit: ba90f2f88e4911312761abab9492c42442117cf0
Date: 2025-11-13T23:10:43.113Z
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

For AI issues: which model did you use?

Composer 1

Does this stop you from using Cursor

No - Cursor works, but with this issue

[deanrie]

Hey, thanks for the report! The triplication issue is quite unusual. To help us investigate, could you please provide the following when it happens again:

• A screenshot or recording showing the 3x red deletions and the need to accept 3 times
• The Request ID from the problematic Composer session (use the Chat context menu → Copy Request ID)
• Console logs (Help → Toggle Developer Tools → Console tab - screenshot any errors)
• Any patterns you’ve noticed, such as specific file types, project size, or using particular models?
• Also, does closing and reopening the affected file clear the duplicate diff displays, or do they persist?

This might be related to known review UI issues, but the triplication is a distinct behavior worth investigating separately.