[Bug] Ampersand (&) operator fails to create background tasks

Bug Description
& is not working for me in creating background tasks!!!

Environment Info

• Platform: darwin
• Terminal: Apple_Terminal
• Version: 2.1.7
• Feedback ID: e855d87d-b746-4676-bb29-14fff3d6c4ca

Errors

[{"error":"Error: Request was aborted.\n    at _createMessage (/$bunfs/root/claude:445:3157)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-01-14T07:45:33.115Z"}]