# Claude Code 2.1.191: /rewind past /clear, ~37% less CPU while streaming

> `/rewind` can now resume a conversation from before `/clear` was run, and streaming CPU usage drops roughly 37% by coalescing text updates to 100ms. Also fixes hooks with comma-separated matchers silently never firing, and background agents resurrecting after being stopped.

| | |
|---|---|
| **Tool** | Claude Code |
| **Version** | 2.1.191 |
| **Kind** | release |
| **Published** | 2026-06-24 |
| **Observed** | 2026-08-11 |
| **Significance** | 3/5 |
| **Breaking** | no |
| **Categories** | feature, fix |

## What changed


- `/rewind` supports resuming a conversation from before `/clear`
- Reduced CPU usage during streaming responses by ~37% (text updates coalesced to 100ms)
- Reduced long-session memory growth from the terminal output cache
- Fix: hooks with comma-separated matchers (e.g. `"Bash,PowerShell"`) silently never firing
- Fix: background agents resurrecting after being stopped — stopping from the tasks panel is now permanent
- Fix: scroll position jumping to the bottom while reading earlier output mid-stream
- Fix: `/permissions` Recently-denied tab discarding an approval on close
- Fix: `claude agents` sending builtin slash commands like `/usage` to background sessions as prompt text
- Fix: managed settings — `forceRemoteSettingsRefresh` now takes effect via MDM or file policy; fetch sends `Cache-Control: no-cache`
- Fix: `/voice` generic "not available" message when disabled by org policy; `/login` URL truncation in Windows Terminal; Cmd+click on links in Ghostty over ssh/tmux
- Improved: sandbox network permission dialog remembers allowed hosts for the session instead of re-prompting per connection
- Improved: MCP capability discovery (`tools/list`, `prompts/list`, `resources/list`) retries transient network errors; OAuth discovery/token requests retry once, headless environments skip the browser popup; HTTP 404s show the URL and point at your MCP config


## Sources

- [changelog_md](https://github.com/anthropics/claude-code/blob/main/CHANGELOG.md) — retrieved 2026-08-11

## Community

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Canonical: https://changelogs.info/claude-code/2-1-191
Entity: https://changelogs.info/claude-code
Event ID: `evt_2026-06-24_claude-code_2-1-191`
Licence: event synthesis © changelogs.info, CC BY 4.0. Linked sources belong to their vendors.