[Bug] Background task agents cause infinite debug loops with concurrent instances

Bug Description
When using "bashes" aka. the backgground tasks and agents, they are a bit buggy. Often times Claude doesnt know hoow to handle them and when multiple instances running at once, Claude sometimes in loops tries to access them and circles around in debug loops, just endlessly.

Environment Info

• Platform: win32
• Terminal: windows-terminal
• Version: 2.0.34
• Feedback ID: 0ebf8b79-2d2b-46c4-ac71-7e19d1c54503

Errors

[{"error":"FaA: Another process is currently installing an update\n    at KEA (file:///C:/Users/SFG/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:1827:1781)\n    at Object.current (file:///C:/Users/SFG/AppData/Roaming/npm/node_modules/@anthropic-ai/claude-code/cli.js:2243:33267)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)","timestamp":"2025-11-06T21:24:28.079Z"}]