Execution failed: Failed to refresh MCP tools for server github-mcp-server; the last catalog is stale

Start in the GitHub Copilot app at /chat on Windows 10.0.26200 with app version 1.1.22, invoking github-mcp-server-web_search repeatedly and comparing the behavior with the Copilot CLI. Done means the MCP tool invokes reliably without the stale-catalog or GitHub credential-registration error.

Using the GitHub copilot app in the past week, most of the time when a session tries to use the "github-mcp-server-web_search" tool, it fails, and the tool gives the following error response:

"MCP tool catalog changed before tool "github-mcp-server-web_search" could be invoked: Failed to verify cached MCP tools: MCP request failed: Transport send error: Transport [mcp::client::ToolListRevisionTransport<rmcp::transport::worker::WorkerTransport<rmcp::transport::streamable_http_client::StreamableHttpClientWorker<mcp::client::DiscoverFallbackHttpClient<mcp::dynamic_headers::HeaderRefreshHttpClientmcp::client::RawCapturingReqwestClient>>>>] error: unexpected server response: dynamic header provider failed: GitHub credential registration is no longer available for this session"

Then, the agent will give the following message:

Execution failed: Failed to refresh MCP tools for server github-mcp-server; the last catalog is stale.

This does not happen EVERY time... just most of the time. This just started happening about a week ago. The copilot CLI never has this problem. It works every time.

I have tried refreshing my GitHub auth, restarting the app, reinstalling the app. Nothing works.

Has anyone else experienced this?