Potential listener LEAK detected, having 175 listeners already

Bug Reports
1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

Agent is keep freezing and I need to stop and re-run the task again and again.
after check the logs, I see the following errors:

ERR [01b] potential listener LEAK detected, having 175 listeners already. MOST frequent listener (1):: Error
at Guc.create (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:47:12844)
at xgr._event [as onDidChangeContext] (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:49:1650)
at xzd.updateParentChangeListener (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:8134:30437)
at new xzd (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:8134:30061)
at xgr.createScoped (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:8134:28306)
at new o (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:291:15065)
at new L0 (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:536:25967)
at S2r._createInstance (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:8194:2025)
at S2r.createInstance (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:8194:1454)
at Object.fn (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:6707:1049)
at S8o (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:276:30033)
at cet (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:276:29787)
at hDt (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:276:31414)
at lRu (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:276:32816)
at vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:276:32276
at uG (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:276:31592)
at oRu (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:276:32269)
at uG (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:276:31603)
at w8o (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:276:29471)
at n (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:276:24657)
at IntersectionObserver.threshold (vscode-file://vscode-app/usr/share/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:7945:38298) ListenerLeakError: [01b] potential listener LEAK detected, having 175 listeners already. MOST frequent listener (1):

Steps to Reproduce

Any Task.

Operating System

Linux

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.7.54
VSCode Version: 1.99.3
Commit: 5c17eb2968a37f66bc6662f48d6356a100b67be0
Date: 2025-10-21T19:07:38.476Z
Electron: 34.5.8
Chromium: 132.0.6834.210
Node.js: 20.19.1
V8: 13.2.152.41-electron.0
OS: Linux x64 6.8.0-86-generic

Does this stop you from using Cursor

Yes - Cursor is unusable

2

Hey, thanks for the report. It looks like the listener leak affects version 1.7.54.

To help diagnose, could you please share:

  • What extensions are installed? (Help → Extensions)
  • Does the issue still occur if you start Cursor with the --disable-extensions flag?
  • What type of project/codebase are you working with?

In the meantime, you could try:

  • Restarting Cursor when you notice the freezing
  • Temporarily disabling extensions to see if one of them is causing the leak

We have at least one other similar report on the same version.