[BUG] VSCode extension webview stopped rendering after CC update
Preflight Checklist
- [x] I have searched existing issues and this hasn't been reported yet
- [x] This is a single bug report (please file separate reports for different bugs)
- [x] I am using the latest version of Claude Code
What's Wrong?
the following is CC's diagnosis: VSCode extension webview stopped rendering assistant replies for ~10h while the session kept working server-side. Remote-SSH setup, Linux host. Timeline (EDT, 2026-07-16): Claude Code auto-updated 2.1.210→2.1.211 at ~7:08 PM the prior evening while a long-lived session's extension host process stayed on 2.1.210. From ~4:46 AM the UI stopped painting new turns. At 8:35 AM I typed a prompt — the session JSONL proves it reached the server and was answered within one minute, but the webview never rendered the reply. Typing a /model slash command at 2:56 PM forced a re-sync and all missing turns appeared at once. Rendering-only defect: input path and engine were unaffected throughout.
What Should Happen?
extension webview should update with cc progress
Error Messages/Logs
Steps to Reproduce
running vs code extension webview
cc processing a request while cc update occurred
webview failed to refresh
i entered a prompt to check cc status, webview failed to update
pressed slash command to see if there is a command that could provice me a session id I could paste into another cc session to check on the first cc sessions status. within 1 minute of pressing "/" the 1st cc session webvew rendered.
Claude Model
Other
Is this a regression?
I don't know
Last Working Version
_No response_
Claude Code Version
2.1.211 (Claude Code)
Platform
Anthropic API
Operating System
Windows
Terminal/Shell
VS Code integrated terminal
Additional Information
VSCode extension webview stopped rendering