[BUG] Multiple unnecessary login pages appear after connection is lost

Environment

• Platform (select one):
• [ ] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [x] Other: Claude Desktop + mcp-remote + custom MCP
• Claude CLI version: 0.12.112
• Operating System: Mac Sequoia 15.1.1
• Terminal: Terminal

Bug Description

First I connect to my MCP server using mcp-remote, successfully send requests and receive responses.
However, if my Mac goes to sleep or I don’t use Claude Desktop for a while, I see the following error in the logs:

Error: SSE stream disconnected: TypeError: terminated

After that, the client attempts to establish a new connection, and multiple authentication pages are automatically opened in the browser.
In the logs I can see that the token was already saved in a file and successfully read, and the token file itself is present.
If I simply close the authentication pages, Claude Desktop continues to work and handle requests as expected.

Steps to Reproduce

1. Connect to an MCP server using mcp-remote
2. Cause a disconnection (e.g. put the Mac to sleep)
3. Open Claude Desktop

Expected Behavior

After establishing a new connection, login pages should not be opened if a token is already saved.

Actual Behavior

Multiple unnecessary authentication pages open in the browser even though a valid token already exists.