Agent keeps trying to run new instances of flutter run

Support Bug Reports
1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

When using an Agent for Flutter development, the agent keeps opening a new terminal instance for “flutter run” instead of reusing already running instance that it opened, also it does not notice a running instance that I started running in the debug console.

I have tried setting a precise rule in the mdc but it is ignored.

Steps to Reproduce

  1. install flutter
  2. create a test app with flutter create
  3. ask the agent to run the app
  4. ask it to make changes i.e. add a text under the counter
  5. observe the agent trying to run another terminal instance with flutter run

Expected Behavior

Agent leveraging the running instance, unsing hot reload/hot restart/ or quitting and retuning the app altogether in the same terminal

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.7.28 (Universal)
VSCode Version: 1.99.3
Commit: adb0f9e3e4f184bba7f3fa6dbfd72ad0ebb8cfd0
Date: 2025-10-01T02:45:21.769Z (1 day ago)
Electron: 34.5.8
Chromium: 132.0.6834.210
Node.js: 20.19.1
V8: 13.2.152.41-electron.0
OS: Darwin arm64 24.6.0

Does this stop you from using Cursor

Yes - Cursor is unusable

2

Thanks for the report. Can you please share the rule you’ve added and is it “Always applied” or did you manually apply it?

3

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