An AI-filed bug: pipelined Bluetooth SCPI queries can overflow the 8 KiB TX ring and drop replies at 115200 baud, and it can't be reproduced in the emulator because its UART model has no baud timing, so both rings drain instantly.
From the Grok pain-radar digests, Oct 28-29 2026 (Oct 28 8:41 AM ET through Oct 29 early-morning Haitch editions). Verified live 2026-10-29: issue/PR read; title and state confirmed.