Bug Report - Saved connection strings disappeared and can't add new ones

[sarah-gelt]

Bug Report

Current Behavior

Using Cursor, all connection strings I had saved have disappeared in the plugin UI
I can't add a new one, clicking Add Connection causes error

Error running command mdb.addConnection: command 'mdb.addConnection' not found. This is likely caused by the extension that contributes mdb.addConnection.

Code/Gist

Expected Behavior/Code

To see existing saved connections and be able to add new ones

Environment

• node.js / npm versions:
• OS: MacOS Tahoe 26.5.1

Cursor details:

• Version: 3.8.11
• VS Code Extension API: 1.105.1
• Commit: e56ad3440df06d22ca7501e65fd518e905486ef0
• Date: 2026-06-18T01:40:18.333Z
• Layout: editor
• Build Type: Stable
• Release Track: Default
• Electron: 40.10.3
• Chromium: 144.0.7559.236
• Node.js: 24.15.0
• V8: 14.4.258.32-electron.0
• xterm.js: 6.1.0-beta.256
• OS: Darwin arm64 25.5.0

Possible Solution

Workaround for now has been to roll back to 1.8.1 even though this was working as recently as a few weeks ago. Unfortunately I can't recall the exact date when it was last working, I sometimes only use the plugin every few weeks.

Additional Context/Screenshots

Rolled back to 1.8.1 ✅

Rolled forward to 1.16.0 ❌

[Anemy]

I can reproduce on Cursor (not vanilla VSCode) I'm seeing this error in the logs when doing a clean install try to run an extension command:

2026-06-24 12:13:44.840 [info] Extension activation failure: mongodb.mongodb-vscode
2026-06-24 12:13:44.840 [error] Activating extension mongodb.mongodb-vscode failed due to an error:
2026-06-24 12:13:44.840 [error] TypeError: this._participant.onDidReceiveFeedback is not a function
at ParticipantController.createParticipant (/Users/rhys/.cursor/extensions/mongodb.mongodb-vscode-1.16.0-universal/dist/extension.js:41:1829139)
at MDBExtensionController.activate (/Users/rhys/.cursor/extensions/mongodb.mongodb-vscode-1.16.0-universal/dist/extension.js:41:124515)
at t.activate (/Users/rhys/.cursor/extensions/mongodb.mongodb-vscode-1.16.0-universal/dist/extension.js:5:1633032)

This is likely a cursor specific bug where they don't provide a handler for onDidReceiveFeedback on the vscode.ChatParticipant. There may be a cursor issue we can reference or we should make one.

Looks like there is one already: https://forum.cursor.com/t/mongodb-extension-fails-to-activate-ondidreceivefeedback-missing-on-chatparticipant-api/163359/12

Last week:

We should see a fix for this come not in Cursor 3.8, but the release following.