The Altium MCP sandbox script failed between PreProcess and PostProcess, breaking Altium undo history until restart, and the agent could not read error dialogs drawn as non-windowed labels.
From the Grok pain-radar digests, Oct 27-28 2026 (Oct 27 8:41 AM ET through Oct 28 7:41 AM ET digests plus the Haitch editions). Verified live 2026-10-28: issue/PR/thread read; title and state confirmed.