[Bug] Anthropic API Error: Cannot modify thinking blocks in assistant messages

Bug Description
API Error: 400 messages.3.content.135: thinking or redacted_thinking blocks in the latest assistant message cannot be modified. These blocks must remain as they were in the original response.\

Environment Info

• Platform: darwin
• Terminal: vscode
• Version: 2.1.145
• Feedback ID: a99b36e1-d013-445d-9ddb-80fc77fb76f1

Errors

[{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"messages.3.content.135: `thinking` or `redacted_thinking` blocks in the latest assistant message cannot be modified. These blocks must remain as they were in the original response.\"},\"request_id\":\"req_011CbWiDc2sDoqHrH2rzZzGF\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:62581)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:51:7694)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-05-29T10:35:19.241Z"}]