Crash Every Time Open New Window

Support Bug Reports
, ,
1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

I was working on a project and wanted to open a browser tab in separate window while I worked on a different tab. I pulled the browser tab off the tab bar and outside the app. It crashed the system. I started the app back up and tried again. Same issue. After trying 3/4 times I decided to click “open a new window” instead. It opened, then crashed. Because Cursor remembers the last state, every time I try to open Cursor it tries to bring up the Main interface and the extra window. Crashes every time.

I was trying to work on my n8n flow in the separate window while working on a .yaml

Steps to Reproduce

Just try to open it.
Uninstall Cursor and install again.
Try to open again.
App remembers the previous state. (How if I uninstalled??)

Expected Behavior

Expected behavior: Work from two different windows (my n8n browser tab and .yaml)

Screenshots / Screen Recordings

Operating System

Windows 10/11

Version Information

Cursor version: 2.6.20

Additional Information

I can’t open the app long enough to look at any bug reports or “about” information.

Does this stop you from using Cursor

Yes - Cursor is unusable

3

Hey, this is a known bug. The browser tab crashes when you drag it out into a separate window. There are a lot of reports about it, the main thread is here: Bug: Browser tab unresponsive after moving to new window (v2.4.22)

Your issue got worse because Cursor tries to restore the previous state on startup, including the second window, and then crashes again. A normal uninstall on Windows doesn’t remove the app data in AppData, so the state stays.

To get out of the crash loop:

  • Close Cursor completely, and double-check in Task Manager
  • Delete the window state folder, make a backup first: %APPDATA%\Cursor\User\workspaceStorage
    Or if you want to reset everything, delete %APPDATA%\Cursor
  • Start Cursor again, it should open with a clean state

After that, don’t drag the browser tab into a separate window. For now, that’s the only workaround. For n8n, you can open it in a regular browser in parallel.

Let me know if it helped.