GitHub Copilot Extension Confirmations return unmarshaled error

[theodoracheng]

Does this issue occur when all extensions are disabled?: Yes/No

• VS Code Version: 1.101.1, Commit 18e3a1e
• OS Version: macOS Sequoia 15.5

Today if a user uses any GitHub Copilot extension and invokes a confirmation, it returns an error that it cannot be unmarshaled.

Request Failed: 400 json: cannot unmarshal number into Go struct field Message.messages.copilot_confirmations of type []*agentprompt.ClientConfirmation

It looks like VS Code is sending "copilot_confirmations":1 as the confirmation.

The expected body would be

copilot_confirmations:[ 
  {
      state: "accepted/dismissed"
   }
]

Steps to Reproduce:

1. Open a new Copilot chat in VS Code and enter @blackbeard-agent confirmations
2. This is a test extension to explicitly invoke a a confirmation
3. Click accept or dismiss

From my testing, I seecopilot_confirmations sending a 1 for both a confirmation and dismissal.
This has been happening for at least a month, and was first reported in this issue #250344

[vs-code-engineering]

Thanks for creating this issue! It looks like you may be using an old version of VS Code, the latest stable release is 1.101.2. Please try upgrading to the latest version and checking whether this issue remains.

Happy Coding!

[roblourens]

From https://github.com/microsoft/vscode-copilot/pull/16185/files#diff-0236a509bb0e276f2bbddab44d22f7bddf2b1fbe48fa8821181aead0f4c058d2R421

[theodoracheng]

so fast, thank you!! ❤

[theodoracheng]

verified this works in insiders! thank you!