Claude Code v2.1.216 fixes sandbox, resume, and long-session slowdown bugs
ashwin-ant · ghdev · 2026-07-21
Anthropic shipped Claude Code v2.1.216 with a long list of workflow and reliability fixes.
Key changes include:
- sandbox.filesystem.disabled to skip filesystem isolation while keeping network egress control
- A fix for quadratic slowdown in long sessions that caused multi-second stalls and slow resumes
- OAuth-related command rejection bugs fixed after token expiry or rotation
- Better handling for AskUserQuestion prompts, @ mentions, resume behavior, worktree isolation, daemon shutdown, and other session edge cases
Overall, this release focuses on making long-running Claude Code sessions more stable and less error-prone.
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