[Bug] Anthropic API Response: Unreadable Control Characters in Output

Bug Description
Claude Code wrote unreadble characters like 'FSNULNUL' or 'DC4NULNUL'

<img width="832" height="189" alt="Image" src="https://github.com/user-attachments/assets/cb5f25bf-1a99-4ec2-a5c5-a3d9dcb0e9c1" />

Environment Info

• Platform: linux
• Terminal: windows-terminal
• Version: 1.0.93
• Feedback ID: 006a1751-9603-4b2a-9c05-cf9a50eae23c

Errors

[{"error":"AbortError: The operation was aborted\n    at abortChildProcess (node:child_process:758:27)\n    at AbortSignal.onAbortListener (node:child_process:828:7)\n    at [nodejs.internal.kHybridDispatch] (node:internal/event_target:827:20)\n    at AbortSignal.dispatchEvent (node:internal/event_target:762:26)\n    at runAbort (node:internal/abort_controller:488:10)\n    at abortSignal (node:internal/abort_controller:459:3)\n    at AbortController.abort (node:internal/abort_controller:507:5)\n    at Timeout._onTimeout (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3614:8230)\n    at listOnTimeout (node:internal/timers:608:17)\n    at process.processTimers (node:internal/timers:543:7)","timestamp":"2025-08-27T07:25:19.918Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at UV (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1757:1184)\n    at file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1757:912\n    at Array.map (<anonymous>)\n    at BX (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1757:903)\n    at RgB (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3170:12631)\n    at LD (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:330:19415)\n    at Ic (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:42814)\n    at B9 (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38355)\n    at yb (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38283)\n    at xD (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38137)","timestamp":"2025-08-27T08:25:38.720Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at UV (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1757:1184)\n    at file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1757:912\n    at Array.map (<anonymous>)\n    at BX (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1757:903)\n    at EgB (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3170:9325)\n    at LD (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:330:19415)\n    at Ic (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:42814)\n    at B9 (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38355)\n    at yb (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38283)\n    at xD (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38137)","timestamp":"2025-08-27T08:43:02.489Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at UV (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1757:1184)\n    at file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1757:912\n    at Array.map (<anonymous>)\n    at BX (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1757:903)\n    at RgB (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3170:12631)\n    at LD (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:330:19415)\n    at Ic (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:42814)\n    at B9 (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38355)\n    at yb (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38283)\n    at xD (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:332:38137)","timestamp":"2025-08-27T08:48:49.770Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at UV (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1757:1184)\n    at file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1757:912\n    at Array.map (<anonymous>)\n    at BX (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1757:903)\n    at EgB (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3170:9325)\n    at LD (file:///home/marco/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:330:19415)\n    at Ic (file:///home/marco/.npm-global/li

Note: Error logs were truncated.