Claude Code v2.1.199: Critical Bug Fixes and Stability Improvements
Score
72Why selected
This is a bugfix-focused release that doesn't introduce new features, but resolves multiple critical reliability issues, significantly improving product quality. Score: 85.
AI commentary
「These fixes greatly enhance Claude Code's stability and user trust in complex production environments, especially for security auditing, long-running tasks, and background agents.」
Quick overview
Anthropic released Claude Code v2.1.199, focusing on fixing multiple critical stability issues. Key improvements include: stacked slash-skill invocations now load up to 5 leading skills; SSL certificate errors immediately show actionable guidance instead of burning retries; streaming responses now retain partial output with an incomplete-response notice when overloaded; subagents now return partial work instead of silently failing on rate limits or server errors; the Linux background-agent daemon no longer kills itself every ~50 seconds; fixed macOS SSH cold-start 'Could not switch to audit session' error; stop command no longer races with background-agent respawn; corrupted config files are now backed up before resetting. Additionally, plan mode correctly auto-allows read-only browser tool calls, and transient rate-limit errors (429) are now automatically retried for subscribers with backoff.
- SSL certificate errors now fail immediately with fix hints instead of burning retries
- Streaming responses keep partial output with incomplete-response notice on overload
- Subagents now return partial work instead of silently failing on rate limits or server errors
- Linux background daemon no longer kills itself periodically after unclean shutdown
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ashwin-ant
released this
02 Jul 23:35
v2.1.199
125d63f
What's changed
- Stacked slash-skill invocations like
/skill-a /skill-b do XYZnow load all leading skills (up to 5), not just the first - Fixed SSL certificate errors (TLS-inspecting proxies, missing
NODE_EXTRA_CA_CERTS, expired certs) burning retries before showing actionable guidance — they now fail immediately with the fix hint - Fixed streaming responses being discarded when the API emits a mid-stream overloaded/server error after partial output — the partial is now kept with an incomplete-response notice
- Fixed subagents cut off by a rate limit or server error silently failing instead of returning their partial work to the parent
- Fixed subagents reporting API errors (e.g. usage limit reached) as successful results — the error is now reported to the parent agent
- Fixed the background-agent daemon on Linux killing itself and every running agent every ~50 seconds after an unclean shutdown left a corrupted worker record
- Fixed background agents failing to cold-start over SSH on macOS with "Could not switch to audit session" (regression in 2.1.196)
- Fixed
claude stopbeing silently undone when it raced a background-agent respawn — the respawn now honors the stop - Fixed background job progress indicators stalling for minutes while the job ran long commands
- Fixed background sessions on memory-starved machines showing a generic error — they now indicate low memory and suggest freeing resources
- Fixed remote sessions briefly flapping between Working and Idle in the agent view when a background agent completes
- Fixed idle subagents vanishing from the agent panel while other subagents were still working; surplus idle agents now collapse into an expandable summary row
- Fixed typing
/modelor/fastwhile viewing a subagent silently opening the lead's model picker — a notice now explains the command applies to the lead - Fixed
SessionStart,Setup, andSubagentStarthooks silently hiding stderr when exiting with code 2 — the error is now shown in the transcript - Fixed
claude --dangerously-skip-permissions daemon <subcommand>being treated as a chat prompt instead of running the subcommand - Fixed
SendMessagesilently misrouting when a re-spawned agent reuses a previous agent's name — the tool now detects the mismatch and asks the caller to retarget - Fixed opening or resuming a session with no new messages needlessly growing the transcript file
- Fixed backgrounding a session with
←or/backgrounddropping its/colorfrom the agent view row - Fixed resetting a corrupted config file from the startup recovery dialog destroying it unrecoverably — it now backs up the file first
- Fixed Claude in Chrome repeatedly opening the reconnect page when sessions run from different builds or config directories
- Fixed plan mode not prompting for state-changing browser tool calls; read-only
browser_batchcalls are now correctly auto-allowed - Transient server rate-limit errors (429s unrelated to your usage limit) are now retried automatically with backoff for subscribers instead of failing the turn
CLAUDE_CODE_RETRY_WATCHDOGnow raises the default retry count for non-capacity transient errors to 300 and lifts the cap of 15 onCLAUDE_CODE_MAX_RETRIESclaude agentssession rows now show pull-request links as bare#Nwithout the redundant "PR" label
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