Background Agents cause Extension Host unresponsive

Describe the Bug

Loading the Background Agents UI causes the window pane to freeze and display:
Extension Host Unresponsive
The extension host has stopped responding. You can wait a moment or reload this window.

Steps to Reproduce

In my installation, this happens every time I open ‘Show Background Agents’ or hit Ctrl-E

Expected Behavior

Should show the background agent’s status / output

Screenshots / Screen Recordings

Operating System

Windows 10/11

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.1.6 (user setup)
VSCode Version: 1.96.2
Commit: 5b19bac7a947f54e4caa3eb7e4c5fbf832389850
Date: 2025-06-25T02:20:02.577Z
Electron: 34.5.1
Chromium: 132.0.6834.210
Node.js: 20.19.0
V8: 13.2.152.41-electron.0
OS: Windows_NT x64 10.0.26100

Additional Information

Even though this only happens when loading the Background Agent window and I assumed it was actually a problem on the remote machine, I have also tried disabling all my extensions and the problem still happens.

Does this stop you from using Cursor

No - Cursor works, but with this issue

2 Likes

Yes. Im having the same issue.