[Bug] MCP Server Shutdown Failure on /exit Command in v1.0.63+

Bug Description
I use the Claude Code CLI (npm @anthropic-ai/claude-code) v1.0.72 with a single local MCP Server. When I enter the /exit command, I get an error message in the terminal that "1 MCP server failed - see /mcp for more info". I downgraded to previous versions of Claude Code CLI and found that the MCP server failed messages started to appear in v1.0.63. It does not happen in v1.0.62 and has not been fixed as of v1.0.72

Environment Info

• Platform: darwin
• Terminal: iTerm.app
• Version: 1.0.72
• Feedback ID: eec1424d-b0be-4877-be73-bade01f7783a

Errors

<img width="1726" height="160" alt="Image" src="https://github.com/user-attachments/assets/2457b09c-29e4-411d-bdcd-fd9368d6f1e6" />