[BUG] VS Code Claude OPUS Runtime bug

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?

I'm using vs code with the claude extension and the OPUS model. I'm getting a runtime error when waiting on OPUS to respond. Here is the log code.

2026-05-14 13:27:36.063 [info] Received message from webview: {"type":"io_message","channelId":"x33o3nm9ulc","message":{"type":"user","uuid":"bbc3654a-f649-479a-a846-91b349684a1b","session_id":"","parent_tool_use_id":null,"message":{"role":"user","content":[{"type":"text","text":"should i wait longer"}]}},"done":false}
2026-05-14 13:27:44.194 [info] Received message from webview: {"type":"request","channelId":"x33o3nm9ulc","requestId":"diit7ixrj9","request":{"type":"log_event","eventName":"sdk_stream_ended_no_result","eventData":{"had_error":true,"subagent_count":0,"message_count":319}}}
2026-05-14 13:27:44.194 [info] Received message from webview: {"type":"request","requestId":"oekpplgd548","request":{"type":"update_session_state","sessionId":"a2282548-6daa-47ec-bb29-16ed672cd1f3","state":"idle","title":"Review draft requirements for Shaw project"}}
2026-05-14 13:27:49.486 [info] From claude: 2026-05-14T18:27:49.486Z [WARN] Streaming stall detected: 35.3s gap between events (stall #1)

2026-05-14 13:27:53.834 [info] Received message from webview: {"type":"request","requestId":"0besfwp57kmr","request":{"type":"open_output_panel"}}

What Should Happen?

I should not get the RTE

Error Messages/Logs

2026-05-14 13:27:36.063 [info] Received message from webview: {"type":"io_message","channelId":"x33o3nm9ulc","message":{"type":"user","uuid":"bbc3654a-f649-479a-a846-91b349684a1b","session_id":"","parent_tool_use_id":null,"message":{"role":"user","content":[{"type":"text","text":"should i wait longer"}]}},"done":false}
2026-05-14 13:27:44.194 [info] Received message from webview: {"type":"request","channelId":"x33o3nm9ulc","requestId":"diit7ixrj9","request":{"type":"log_event","eventName":"sdk_stream_ended_no_result","eventData":{"had_error":true,"subagent_count":0,"message_count":319}}}
2026-05-14 13:27:44.194 [info] Received message from webview: {"type":"request","requestId":"oekpplgd548","request":{"type":"update_session_state","sessionId":"a2282548-6daa-47ec-bb29-16ed672cd1f3","state":"idle","title":"Review draft requirements for Shaw project"}}
2026-05-14 13:27:49.486 [info] From claude: 2026-05-14T18:27:49.486Z [WARN] Streaming stall detected: 35.3s gap between events (stall #1)

2026-05-14 13:27:53.834 [info] Received message from webview: {"type":"request","requestId":"0besfwp57kmr","request":{"type":"open_output_panel"}}

Steps to Reproduce

Open vs code
ask OPUS a question
get the error

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

IDK

Claude Code Version

2.1.141

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

Not at this time.