Extra brackets automatically added during AI autocompletion with Continue.dev extension

Reproduce the issue with Continue.dev using the Codestral configuration in Robertor.java, then compare code completion insertion with native VS Code or GitHub Codespaces. Start by tracing the ghost-view text insertion entry point mentioned in the report; done means accepting autocomplete no longer adds an extra bracket.

Is there an existing issue for this?

• I have searched the existing issues

OS/Web Information

• Web Browser: Chrome
• Remote OS: Debain 12
• code-server --version: 1.101.2

Steps to Reproduce

Step 1: Install Continue.dev

Install the Continue.dev extension in your IDE.

Step 2: Configure Continue with Codestral Free API

Configure Continue to use the Codestral free API key for autocomplete functionality.

Example Configuration

name: Local Assistant
version: 1.0.0
schema: v1
models:
  - name: Codestral
    provider: mistral
    model: codestral-latest
    apiKey: XXXXXXXXXXXXXXXXXXXXXXXXXX
    roles:
      - autocomplete
      - chat
      - edit
      - apply
context:
  - provider: code
  - provider: docs
  - provider: diff
  - provider: terminal
  - provider: problems
  - provider: folder
  - provider: codebase

Step 3: Enable Auto-complete

Enable the auto-complete feature in Continue.dev settings.

Step 4: Create Test File

Create a new file named Robertor.java and add the following comment:

// a java swing programm that takes an input X number and display a circle with the radius of X

Step 5: Test Autocomplete

1. Move to the next line by pressing Enter
2. Accept suggestions using the Tab key

Issue: Extra Bracket Appears

An extra bracket appears during autocomplete, as demonstrated in the capture video.

https://github.com/user-attachments/assets/2f9fb6a3-a250-493b-a956-b6383cf01217

Expected

No extra bracket like in openvscode-server or codespaces :

https://github.com/user-attachments/assets/8e67a3b5-118f-4f26-81d8-d0e11c4f486b

Actual

I dont know but code completion appearing in continue console doesnt'have bracket .
That means that the issue is during insertion in the ghost view text , something is auto adding brackets.

Logs

Screenshot/Video

On code-server , extra bracket :

https://github.com/user-attachments/assets/2f9fb6a3-a250-493b-a956-b6383cf01217

Working example on codespace :

https://github.com/user-attachments/assets/aadf4d89-d307-4e96-b304-ed4461a8c5d2

Does this bug reproduce in native VS Code?

No, this works as expected in native VS Code

Does this bug reproduce in GitHub Codespaces?

No, this works as expected in GitHub Codespaces

Are you accessing code-server over a secure context?

• I am using a secure context.

Notes

No response