Enter key unresponsive in /mcp dialog after completing OAuth auth flow

Description

After completing the Atlassian MCP OAuth flow in the browser, the user is redirected to https://claude.ai/settings/mcp/auth_done?authed_mcp_server_id=.... At this point, the /mcp dialog in the CLI should allow the user to press Enter to confirm and finish the connection. Instead, Enter does nothing — the dialog is unresponsive.

The only way to dismiss the dialog is to press Esc, which cancels the flow and discards the successful authentication. The user then has to re-run /mcp and redo the entire auth flow, hoping Enter works on the next attempt.

Steps to reproduce

1. Run /mcp in Claude Code CLI.
2. Select a claude.ai MCP connector (e.g., Atlassian).
3. Complete the OAuth flow in the browser.
4. Get redirected to the auth_done callback page.
5. Return to the terminal and try to press Enter to confirm.

Expected behavior

Enter confirms the dialog and completes the MCP connection.

Actual behavior

Enter key does nothing. The dialog is stuck. The only option is Esc, which cancels the flow.

Environment

• Platform: Linux (WSL2)
• OS: Linux 6.6.87.2-microsoft-standard-WSL2
• Claude Code CLI

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