MCP server processes now quit cleanly instead of lingering as background zombies; tab-indented files also get cleaner edits.
Changes
3
Total Changes (vs Average)
0.3×
Version Type
Patch
Release Focus
Mixed
Days Since Prior Release
3
Release # This Month
#9 of 24
Bug Fix Ratio
33%
Post-Release Edits
—
Change Category
Ecosystem Impact
MCP has appeared in 3 of the last 10 releases, with fixes spanning process lifecycle, server configuration, and connection stability — suggesting sustained hardening of the extension protocol ahead of broader ecosystem adoption.
Key Themes
1MCP Process Lifecycle Fix|2Editor & Error Handling Polish
May Help If You've Noticed
Background processes from Claude Code persist after you quit, quietly consuming system resources
Tab-indented code gets mangled or misaligned when Claude Code makes edits to your files
Tool calls appear to fail silently or show confusing error messages during AI-assisted tasks
Changes in Claude Code v1.0.21
Improved1 change
•Improved editing of files with tab-based indentation
Fixed1 change
•Fixed a bug where stdio MCP server processes would linger after quitting Claude Code
Other1 change
•Fix for tool_use without matching tool_result errors