100% CPU even when Cursor is closed

Support Bug Reports
1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

I closed my Cursor IDE, but it still showing 100% CPU usage

Steps to Reproduce

I just Cursor open. Not sure what is causing the CPU usage, even with IDE closed.

Screenshots / Screen Recordings

Screenshot 2025-09-01 at 2.09.51 PM.png
Screenshot 2025-09-01 at 2.09.51 PM.png936×220 28.2 KB

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.5.9
VSCode Version: 1.99.3
Commit: de327274300c6f38ec9f4240d11e82c3b0660b20
Date: 2025-08-30T21:02:27.236Z
Electron: 34.5.8
Chromium: 132.0.6834.210
Node.js: 20.19.1
V8: 13.2.152.41-electron.0
OS: Darwin arm64 24.6.0

Does this stop you from using Cursor

No - Cursor works, but with this issue

2

Hey, Cursor Helper (Plugin) indicates that the issue is likely related to one or more extensions. Please try the following:

  • Use Process Explorer inside Cursor.
  • Start Cursor with the flag: cursor --disable-extensions

This will launch Cursor without extensions.

It would be great if you could share details and screenshots of the running processes.