Cursor Freeze Bug

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

I work under windows environment. When I ask the AI agent to produce some work for me, if I swith to another window to do other works, the cursor interface would freeze, and I have to close it through windows task manager. It’s very troublesome. You can see from the attached screeshot, the cursor disappears here.

Steps to Reproduce

Just open the cursor, ask the agent to compose something, and while he’s working, switch to another window, the cursor IDE would freeze.

Screenshots / Screen Recordings

Operating System

Windows 10/11

Current Cursor Version (Menu → About Cursor → Copy)

Version: 2.1.47 (system setup)
VSCode Version: 1.105.1
Commit: 2d3ce3499c15efd55b6b8538ea255eb7ba4266b0
Date: 2025-12-04T02:31:50.567Z
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 10.0.26100

Does this stop you from using Cursor

No - Cursor works, but with this issue

Hey, thanks for the report. This looks like a known bug. We’re tracking it here: Cursor freezes on final “Review Changes” step in Agent Mode

We need to confirm details and collect diagnostics:

  • Does the pattern match: it freezes if the Agent finishes while the Cursor window is not focused
  • Request ID of the frozen chat: chat menu (top-right) > Copy Request ID
  • Console screenshot: Help > Toggle Developer Tools > Console at the moment of the freeze
  • MCP: Settings > search “MCP” - which servers are enabled. Try disabling all MCPs temporarily and restart
  • Extensions: launch with cursor --disable-extensions and check
  • Process Explorer: CTRL+Shift+P > Developer: Open Process Explorer - which process is spiking
  • Update to the latest version and check if the bug still reproduces

As a temporary workaround, try keeping the Cursor window focused when the Agent finishes a step. Let me know if this helps and please share the data above.

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