Cannot start Excalidraw extension

[niko.usai]

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

This extension worked with no problem, it started to break the Extension Host, I’ve tried to install old version but it does the same, so I suppose it’s an IDE thing, also the error.

Could anyone have an idea?
the extension is this GitHub - excalidraw/excalidraw-vscode: Excalidraw for Visual Studio Code

2025-09-17 14:52:55.992 [info] Extension host started
2025-09-17 14:52:55.993 [error] Error: [invokeFunction] unknown service ‘IExtHostShellExecService’
at Object.get (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/api/worker/extensionHostWorkerMain.js:38:1123)

Steps to Reproduce

install the extension open any .excalidraw file

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.6.26
VSCode Version: 1.99.3
Commit: 6af2d906e8ca91654dd7c4224a73ef17900ad730
Date: 2025-09-16T17:12:31.697Z
Electron: 34.5.8
Chromium: 132.0.6834.210
Node.js: 20.19.1
V8: 13.2.152.41-electron.0
OS: Darwin arm64 24.5.0

Does this stop you from using Cursor

No - Cursor works, but with this issue

[npjonath (Jonathan J)]

Same for me. latest Excalidraw extension, latest cursor version.
Even try on a fresh install without success. It still works fine on latest Vscode.

[alexryanterry (Alex Terry)]

Same

[deanrie]

Hey, thanks for the report. We’ve identified the problem and are fixing it.

[NathanWang]

Same for me

[NathanWang]

solved in 1.6.35

[niko.usai]

1.6.45 solved for me