Issue: GitHub Copilot Connection Fails and Loops Back to Model/Provider Selection #37952

Description

Hello,
I am not sure if this is a duplicate of #36819
Also my Enviroment is Home Assistant OS via https://github.com/magnusoverli/opencode but I was referred here by them.

Summary

Connecting to GitHub Copilot fails. Instead of completing the authentication/connection process, the application returns to the model/provider selection screen, creating an endless loop that prevents GitHub Copilot from being configured or used.

Expected Result

The GitHub Copilot connection is established successfully, and the selected provider becomes available for use.

Actual Result

After the connection process, the application redirects back to the model/provider selection screen instead of completing the setup. Repeating the process results in the same behavior, creating an infinite loop.

Impact

Users are unable to connect to or use GitHub Copilot, blocking access to the provider.

Additional Information

• The issue is consistently reproducible.
• No error message is displayed. The workflow simply returns to the model/provider selection screen.
• Using this via https://github.com/magnusoverli/opencode in HA OS

Plugins

None

OpenCode version

1.18.3

Steps to reproduce

1. Open the application.
2. Navigate to the AI model/provider selection.
3. Select GitHub Copilot as the provider.
4. Start the connection/authentication process.
5. Complete any required authentication steps.

Screenshot and/or share link

https://github.com/magnusoverli/opencode

Operating System

Home Assistant OS 18.1

Terminal

bash