Crash When Using Browser in Separate Window

Support Bug Reports
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1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

Cursor will crash if you move the browser to a new window and then navigate to any website.

Steps to Reproduce

Steps to reproduce:

  • Open Cursor
  • Open a project (Project is fully indexed and was idle with no agents running)
  • Click “More Actions”
  • Click “Open Browser”
  • Right click on the browser tab
  • Click “Move into New Window”
  • In the new window navigate to any website
  • Cursor crashes

Expected Behavior

  • Browser navigates to page

Operating System

MacOS

Version Information

Version: 2.4.28 (Universal)
VSCode Version: 1.105.1
Commit: f3f5cec40024283013878b50c4f9be4002e0b580
Date: 2026-02-03T00:56:18.293Z
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

Additional Information

Notes:

  • Navigated to salesforce login page and google homepage
  • Reproduced 3 times
  • I have the file explorer, two panes of code open in window A, agent chat open in window B, opening the browser would be the third window C.

Does this stop you from using Cursor

Sometimes - I can sometimes use Cursor

3

Hey, thanks for the report. This is a known issue. The same thing was already logged on Windows, and now it’s confirmed on macOS too.

Main thread: Bug: Browser tab unresponsive after moving to new window (v2.4.22)

Workaround:

  • Don’t move the Browser tab into a separate window. Keep it in the main Cursor window.
  • Or open localhost directly in a regular browser.

If there are any updates, we’ll post them in the main thread. Closing this one as a duplicate.

4

A post was merged into an existing topic: Bug: Browser tab unresponsive after moving to new window (v2.4.22)