An MCP preflight run across a live 60-device KNX home left the bus locked: when a KNXnet/IP tunnel stalls the editor still says connected: true and every later operation times out, and when an evaluation times out the bus task keeps running so every later MCP call fails with a download preview still running on the bus. Two devices fail every time because the image builder leaves load-control ranges empty.
From the Grok pain-radar digests, Oct 26-27 2026 (Oct 26 12:41 PM ET through Oct 27 7:41 AM ET digests plus the Haitch editions). Verified live 2026-10-27: issue/PR/thread read; title and state confirmed.